Relative Velocity || Kinematics|| Motion in a Straight Line 08 || Class 11 Chapter 4 || JEE MAINS

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  • Опубліковано 29 жов 2024

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  • @PhysicsWallah
    @PhysicsWallah  6 років тому +2423

    Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App.
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    • @viveksinghtomar9-d334
      @viveksinghtomar9-d334 6 років тому +36

      Physics Wallah - Alakh Pandey sir you are the best Jo kahin samajh nahi aata would aapse samajh aata hai

    • @vaishali19090
      @vaishali19090 6 років тому +51

      They will meet after 2 sec and at 28 m above the ground

    • @Kilooeeeeee
      @Kilooeeeeee 6 років тому +25

      Sir neet mein #180 question krne h 3 hours m toh ek question ko 1 min sirf.....toh itna lmba solve krnge toh time nhi hoga na...
      Koi #short #tricks bta do...!!😟

    • @Kilooeeeeee
      @Kilooeeeeee 6 років тому +10

      #sir_relative_velocity_toh_imp_topic_h_na..!

    • @Shubham_Pawar14
      @Shubham_Pawar14 6 років тому +4

      Sir i want to follow your official Insta account ..please give me link to follow you on insta

  • @ytavoquix1435
    @ytavoquix1435 3 роки тому +1093

    51:41 instead of asking like or subscribe
    He said padhai achhe se kijiega or kuch bhi nhi. What a personality 🥰

    • @akashpattnayak9056
      @akashpattnayak9056 2 роки тому +3

      Bhai ise video ka notes kaisa banaya please bataoo

    • @Johnny_sinswa
      @Johnny_sinswa 2 роки тому +25

      @@akashpattnayak9056 jo padha rhe h usse chapp lo

    • @darakhshayasmeen
      @darakhshayasmeen 2 роки тому +8

      @@akashpattnayak9056 kaha se aate hain ye log😤😂

    • @darakhshayasmeen
      @darakhshayasmeen 2 роки тому +1

      I have completed your 500 likes😂😍

    • @guruprasadmhiremath3540
      @guruprasadmhiremath3540 2 роки тому +1

      @@darakhshayasmeen I have completed ur 1 like... 😁

  • @likhith4900
    @likhith4900 Рік тому +748

    It's 2023 till students are watching this evergreen teaching of legend wow just amazing❤❤❤

  • @sonamchokizamin8548
    @sonamchokizamin8548 3 роки тому +2710

    I'm from Bhutan and I could get admission in engineering college after 12th grade by watching your videos. Now I'm in my dream college yet I'm still borrowing your knowledge,sir. Thank you for everything, Alak sir.

    • @chrisrogers9462
      @chrisrogers9462 3 роки тому +81

      Can you understand sir language hindi

    • @atripathi7063
      @atripathi7063 3 роки тому +25

      Hmmm?

    • @okbie943
      @okbie943 3 роки тому +86

      @@chrisrogers9462 as a southindian i can understand his teaching

    • @smayra8694
      @smayra8694 3 роки тому +18

      Congo❤️👍

    • @msa0568
      @msa0568 3 роки тому +13

      @@okbie943 same

  • @ahalll5364
    @ahalll5364 11 місяців тому +68

    Answer for the question in the end...
    They will meet in t= 2seconds
    and at A = 28m and B = -12m (-ve since displacement is downwards from initial position.)
    Thank you so much Alakh Sir for explaining all the concepts amazingly and helping all of us JEE & NEET aspirants!

    • @aaminatabassum2813
      @aaminatabassum2813 5 місяців тому +1

      Yes. That’s correct. Even I got the same answer. But where will they exactly meet ?

    • @bhargav96
      @bhargav96 4 місяці тому

      @@aaminatabassum2813 28 m above the ground

    • @ASHVATH23
      @ASHVATH23 Місяць тому +1

      👍

    • @Broaah
      @Broaah 6 днів тому

      They will meet 12 metre downward position from B and 28 metre upward position from A

  • @prajwal7867
    @prajwal7867 4 роки тому +852

    (For the last question)
    For time :
    u = -20 m/s;
    a = 0 m/s²;
    s = -40 m.
    Therefore,
    s = ut + (1/2)at²
    -40 = (-20)t + (1/2)(0)t²
    -40 = -20t
    t = 40/20 = 2 s
    For position :
    1) With respect to particle B
    u = 24 m/s;
    a = -g = -10 m/s²;
    t = 2s.
    Therefore, s = ut + (1/2)at²
    s = (24)(2) + (1/2)(-10)(2)²
    s = 48 - 5×4 = 48 - 20
    s = 28m
    2) With respect to particle A
    u = 4m/s;
    a = -10m/s²;
    t = 2s.
    Therefore, s = ut + (1/2)at²
    s = (4)(2) + (1/2)(-10)(2)²
    s = 8 - 5×4 = 8 - 20
    s = -12m

  • @experienceeverything4841
    @experienceeverything4841 3 роки тому +4172

    "Main thaira raha, zameen chalne lagi" ~ Relative Motion in a Nutshell.

  • @babitabaishnab5255
    @babitabaishnab5255 Рік тому +61

    30:12 he somehow always knows , when we dont get it . people in my school keep proceeding even after we say we've got doubts .they be like ' practice karo ho Jayega ' . ❤❤❤

  • @riyapal1832
    @riyapal1832 4 роки тому +922

    The last thing u said "agar vdo pasand aya ho to padhai acche se kijiyega OR KUCH bhi mat kariyega" that hit me hard. Sir you're really brilliant teacher. To be very honest I would never ever loose hope and show neglection to my studies becoz if the teacher is so honest and sincere then why can't students.ill be studying really hard . Hats off to you🙏

    • @souvikbhattacharyya3399
      @souvikbhattacharyya3399 4 роки тому +6

      prochondo sotti kotha

    • @souvikbhattacharyya3399
      @souvikbhattacharyya3399 4 роки тому +1

      @Angelo Wilson jitna pardna mere sarir ki liye thik hai

    • @souvikbhattacharyya3399
      @souvikbhattacharyya3399 4 роки тому +1

      @Angelo Wilson 10 hours

    • @arnavvats4861
      @arnavvats4861 4 роки тому +1

      @@souvikbhattacharyya3399 wtf....then u probably need to do smart work than hard work...u are just wasting Ur time man...u can study for 4 hours a day with proper focus and your syllabus + extra studies can be completed

    • @arnavvats4861
      @arnavvats4861 4 роки тому

      @@souvikbhattacharyya3399 bro Aapke 10th me kitne aae?

  • @rohit_1895
    @rohit_1895 Рік тому +553

    it's now 2022
    but The old lecture of alakh sir is still diamond ( precious) for us..!
    ,🙏🙏🔥

  • @NehaSharma-eo9lc
    @NehaSharma-eo9lc 4 роки тому +1171

    Nobody has explained the RELATIVE concept with this excellence to me. Dhanyawaad shrimaan ji💗✍🏻🙏🏻

  • @youreallowedtodream8209
    @youreallowedtodream8209 Рік тому +347

    time of meet = 2s
    position from A = 28m
    postion form B = -12m

  • @Sahil-gb1jh
    @Sahil-gb1jh 4 роки тому +1087

    They will meet in 2s , and position from ground where they meet is 28m and -12 from top

  • @madhuagrawal2035
    @madhuagrawal2035 4 роки тому +963

    Me: My reaction when I see ncert problem - 🤯🤯🤯
    Physics wallah: ye to halwa hai halwa 😂😂

    • @anjanthakur3357
      @anjanthakur3357 4 роки тому +7

      🤭🤭🤭🤭

    • @Nityartist
      @Nityartist 4 роки тому +37

      @@anjanthakur3357 yes and after watching his whole videos even IIT questions be like halwa🤣😂

    • @mahirsingh9660
      @mahirsingh9660 4 роки тому +6

      @@Nityartist right

    • @shahinaparvin3237
      @shahinaparvin3237 3 роки тому +3

      Sahi kaha halwaa maava sab khane me aasan kr dete hai sir🤤🤤🤤😂😅

    • @Nityartist
      @Nityartist 3 роки тому +11

      @SHY ERROR vo to paper hone ke baad hi pata chalega LOL 🤣

  • @vishwanathpapulwar8709
    @vishwanathpapulwar8709 5 років тому +2451

    The only youtuber who never asks to subscribe or like his channel.
    If agreed like😝

  • @Jarvis___0b
    @Jarvis___0b 10 місяців тому +137

    Its 2024 still watching his videos which never gets old ❤❤

    • @sanjitgaonkar9534
      @sanjitgaonkar9534 3 місяці тому +2

      N still better than new vedios

    • @Jarvis___0b
      @Jarvis___0b 3 місяці тому

      @@medha_0 u should approach ur skol teacher or any other person.

  • @mdrashidreza9480
    @mdrashidreza9480 6 років тому +276

    Gazab! Teaching Skill with most convenient example!👌👌👌👌👌

  • @motivationalvideos9974
    @motivationalvideos9974 3 роки тому +689

    -12 m from top and at 28 m
    The time is 2 seconds they meet after 2 seconds.

  • @APSCAcademia
    @APSCAcademia 3 роки тому +694

    Other teachers: I guess you didn't understand.
    Physic Walla: Feel Nahi Aaya 😂😂

    • @ayushbhardwaj810
      @ayushbhardwaj810 3 роки тому +15

      @Noob S. bhai lekin ye 2 saal phele ki vids h us saal me kon itna aacha feel dilata tha (:
      :)

    • @vanshikagupta2156
      @vanshikagupta2156 3 роки тому +4

      trueeeee😂😂

    • @ayushbhardwaj810
      @ayushbhardwaj810 3 роки тому +1

      @@vanshikagupta2156 hnnnn(:

    • @herambaherrao9884
      @herambaherrao9884 3 роки тому +3

      @Noob S. phir coaching se Sikh , Yaya kyu aya

    • @shaleenjain2630
      @shaleenjain2630 3 роки тому +1

      @Supreme Chancellor wo bhi inhi se sikh kar jaate

  • @vinny1-08
    @vinny1-08 4 місяці тому +129

    lakho rupiya de diye, offline classes join bhi karliye,
    end mein to yaha pe hi aa pahuche 😂

  • @Ayush-ie5qr
    @Ayush-ie5qr 4 роки тому +931

    Akash and Allen : Concepts get clear
    Physics Wallah : Concepts get crystal clear 🤗🤗💥💥

    • @JaysukhBhai12
      @JaysukhBhai12 4 роки тому +7

      Yes right neet ke age ke deen bhi me yeh video dekhta hu so funny 😃😃😃

    • @yashijain2936
      @yashijain2936 4 роки тому +4

      Correct 👍👍👍

    • @jigared1496
      @jigared1496 4 роки тому +59

      Concepts never get cleared in AKSAH and ALLEN

    • @Aszx_zx-g8f
      @Aszx_zx-g8f 4 роки тому +3

      @@jigared1496 right👍

    • @user-et6ec1en6s
      @user-et6ec1en6s 3 роки тому +134

      In aakash and allen bank account gets cleared🤣

  • @gamingbuddy5880
    @gamingbuddy5880 3 роки тому +5761

    Ultra legend watching this to complete there backlog

  • @ashwaryarajsingh
    @ashwaryarajsingh 2 роки тому +547

    Most relevant lecture required for this topic....17:23 mein 13 aayega sir...waise toh aapko correct karna mere jaise student ke liye is no less than a sin as it's just a calculation error and you are such great teacher

  • @RonitNirwal
    @RonitNirwal 4 місяці тому +19

    41:05
    In this question UBG = 20ms
    ABG = -1 ms²
    SBG = 150 m
    S=ut + ½at²
    150 = 20t + ½ -t²
    Multipky both sides by 2
    300 = 40t - t²
    t² - 40t +300=0
    t² -30t -10t + 300 = 0
    t(t-30) -10(t-30 ) = 0
    (t-30) (t-10) = 0
    t=30
    t=10
    Put both values in the formula the distance will be same so boy catches girl at 10 and 30 seconds

    • @selfish-rg3pf
      @selfish-rg3pf 3 місяці тому

      What would be the value of closest distance however I think it may be 3

    • @sharkgaming4898
      @sharkgaming4898 2 місяці тому

      Thanks

    • @nehakoderi3841
      @nehakoderi3841 Місяць тому

      ​@@selfish-rg3pf there won't be closet distance since the boy will catch the girl

    • @JEEShikshak
      @JEEShikshak 15 днів тому

      But by formula of root b²-4ac/2a it is coming t=40 s ot t=0

  • @nangsolusingkai2732
    @nangsolusingkai2732 5 років тому +1796

    😀

  • @rajeevsrivastava9107
    @rajeevsrivastava9107 6 років тому +437

    This man is a perfect example for changing the mindset of people about UP and Allahabad waale

    • @rahejahillsbungalowownersa681
      @rahejahillsbungalowownersa681 5 років тому +24

      they are amazing people dont have any doubt about that why would u have a negative perception about them anyways

    • @shivampawar4450
      @shivampawar4450 5 років тому +15

      UP waalo pe doubt kabhi nahi tha....lekin BIHAR pe hai aur rahega jab tak har saal aane waale fraud cases band na ho

    • @umeshmishra7112
      @umeshmishra7112 5 років тому +24

      @@shivampawar4450 hc verma bhi bihar se hai

    • @rishi2820
      @rishi2820 5 років тому +14

      @@shivampawar4450 nahi bhai bihar bhi accha mai bihar se hi hu wo alag baat hai ki kuch exceptions hai

    • @devilsingh975
      @devilsingh975 5 років тому +5

      Sharam nahi aati man to kar raha hai saaron ko ek ek laat marun aakar

  • @ritaranisahoo8701
    @ritaranisahoo8701 4 роки тому +132

    A best teacher...in the world Who can qualifiy JEE, NEET, and alll type of exams.. Such a great teacher...

    • @bullymaguire827
      @bullymaguire827 4 роки тому +8

      Neet shayad nahi kyunki usme bio hai
      Jee1:1:1 Subject ratio
      Neet 1:1:2 Subject ratio(Bio ka max rAtio hai matlab 2)

    • @anonymous-xm9qz
      @anonymous-xm9qz 4 роки тому +1

      @@bullymaguire827 bhaiii sir is best for jee mains and neet physics and chem but not for jee adv........future me shayad sir jee adv ke bhi karaye but abhi tak to nahi karya isleya jee adv ka nahi bol skate

    • @bullymaguire827
      @bullymaguire827 4 роки тому +1

      @@anonymous-xm9qz to maine kab kaha ki jee advanced ke liye bhi.Aur sir qualify kar sakte hain uski baat ho rahi hai.Padhane ki nahi

    • @anonymous-xm9qz
      @anonymous-xm9qz 4 роки тому +1

      @@bullymaguire827 bhaiii me ye bol raha tha...sir neet phy and chem ke liya more than enough haiii....and maine bas tujhe reply diya maine ye kab bola tu bol raha tha 😎😎😎😎

    • @bullymaguire827
      @bullymaguire827 4 роки тому +1

      @@anonymous-xm9qz ok bhai

  • @suruchisengar
    @suruchisengar Рік тому +287

    17:23 , in place of -14 there will come -13..🙂

  • @princecreationbastu6885
    @princecreationbastu6885 5 років тому +201

    Time of meeting- 2 seconds
    Distance- 28 metres from point of B and -12 metres from point of A

    • @VishalKumar-ny6hy
      @VishalKumar-ny6hy 2 роки тому +2

      Correct

    • @aayushsharma6519
      @aayushsharma6519 2 роки тому +6

      haa bhai tumhara zyada sahi hai...upar wale bhai sahab ne kewal 28,2 likha tha

    • @mr.x9386
      @mr.x9386 2 роки тому +6

      bro time positive me aa rha mera +2 aur distance 28 from b and -12 from a

    • @sohanadas6148
      @sohanadas6148 2 роки тому +1

      Explain plsss

    • @ajaymeena9888
      @ajaymeena9888 2 роки тому +1

      @@sohanadas6148 hii

  • @siddartharibam2843
    @siddartharibam2843 3 роки тому +336

    17:25 Vap= -13m/s

  • @deepanjalitiwari8246
    @deepanjalitiwari8246 2 роки тому +19

    13:11 " Tum log humesha mera naam puchte rehte ho My name is ALAKH PANDEY " aaj sabko inka naam pta hai....sir ko btane k zaroorat nhi...... This is called GROWTH 🥺💗✨

  • @Manutd01234
    @Manutd01234 Рік тому +52

    I feared relative velocity but this man is a magician he made me enjoy physics

  • @saumymishra2012
    @saumymishra2012 3 роки тому +59

    From A : -12m
    From B : 28m
    and after 2 seconds.

    • @Hitakshivermaa
      @Hitakshivermaa 3 роки тому +1

      Can you tell why should we take -40m as a distance..?

    • @aimmatureguy
      @aimmatureguy 3 роки тому +1

      @@Hitakshivermaa Bcz we take relative velocity of A with respect to B. After some time ball A falling down then displacement is
      “-40m"

  • @mach2570
    @mach2570 6 років тому +336

    Time does not depend on frame of reference is not always true.Only true according to Newton but according to Einstein's Special theory of relativity, time is not absolute.

  • @Mr.GriffinFamily
    @Mr.GriffinFamily 3 роки тому +30

    51:27 time=2sec and distance=28m or -12m(Downward direction)

    • @iamharshittt
      @iamharshittt 3 роки тому

      Yes bro❤️

    • @shreyagupta5698
      @shreyagupta5698 3 роки тому

      could you please tell me how u did that?

    • @gouravp.3851
      @gouravp.3851 3 роки тому +1

      @@shreyagupta5698 After finding u,a,S of B w.r.t A. Find t. Now apply this 't' with actual u,a of A and B you will get the distances.

    • @Saadkhan-un3bg
      @Saadkhan-un3bg Рік тому +1

      @leothecat7115 displacement 20m hai bhai

  • @parth_033
    @parth_033 Рік тому +71

    It's end of 2023 but your lectures are evergreen..❤

  • @abhishekgaming991
    @abhishekgaming991 4 роки тому +292

    Alakh sir's way of teaching is very superb . Alakh sir is a legend of physics.

    • @juicewrld955
      @juicewrld955 4 роки тому +1

      ua-cam.com/video/g9QQ1LmfDFs/v-deo.html🙏🙏.......Yes bro

    • @juicewrld955
      @juicewrld955 4 роки тому +4

      Bro Legend of chemistry too....

    • @jasmeetsinghkhalsasingh1825
      @jasmeetsinghkhalsasingh1825 4 роки тому +2

      Uu are absolutely right ☺️

    • @BipinKumar-pf6hc
      @BipinKumar-pf6hc 4 роки тому +5

      Rip Alpha series 😢😢

    • @lioness9039
      @lioness9039 4 роки тому +1

      see this video examination in life never give up -ua-cam.com/video/k4w4pak66V0/v-deo.html

  • @arihantkandpal
    @arihantkandpal 5 років тому +330

    I think it should be -13m/s
    At 17:46.

  • @GURBANISTATUS_
    @GURBANISTATUS_ 3 роки тому +61

    Answer to homework question:-
    They will meet after 2 seconds
    From ground at a distance of 28m and from top at distance 12 m downwards (-12m)

    • @mrpushpendrasharmatrader7794
      @mrpushpendrasharmatrader7794 3 роки тому +1

      ua-cam.com/users/shortsJ9Gd5bWVvsA?feature=share

    • @sabitadei2028
      @sabitadei2028 3 роки тому +9

      How did u get t= 2 sec, I got -2 sec. Can u plz explain ??

    • @sohamauti2618
      @sohamauti2618 3 роки тому +1

      @@sabitadei2028 t = Sba / Vba = 40 / 20 = 2s 😊

    • @rajhritsaha
      @rajhritsaha 3 роки тому +3

      @@sabitadei2028 distance will be - 40 in respect to upper body

    • @neshangc4574
      @neshangc4574 3 роки тому +1

      @@sabitadei2028 same confusion

  • @ajayagarwalajayagarwal1936
    @ajayagarwalajayagarwal1936 7 місяців тому +7

    This lectures are still god gifted for us ❤❤
    Like if are watching in 2024-2025

  • @krishnakumarsingh873
    @krishnakumarsingh873 4 роки тому +203

    Answer of last question
    T=2 & position of meeting For A (ball of top) = -12m and For B (ground ball) = 28m

  • @mathtech8318
    @mathtech8318 4 роки тому +311

    Best faculty in physics
    If u agree hit like

    • @chessfoundation7538
      @chessfoundation7538 4 роки тому +1

      Bhai aaj 18 april hai aur aaj albert enstein ka death day hai 😢😢😢😢😢

    • @srnt55
      @srnt55 4 роки тому +3

      Abay einstein sir bhi physics doosray se physics padh raha hai😅😅😅😅😅😅

    • @khagenmili6106
      @khagenmili6106 4 роки тому

      @THE PERFECTION CLASSES CONTAI ❤️

  • @hardiksingh5626
    @hardiksingh5626 Рік тому +120

    i am in 3rd year of college now,watching it again and feeling nostalgic. So happy to see what alakh sir has achieved now. Epitome of dedication, perseverence and hard work.Proud to be a PWian ❣❣

  • @PalakRao-tz8yn
    @PalakRao-tz8yn Рік тому +11

    Time of meeting 2s
    Dist 28m. B
    From A. -12

  • @manojtiwari5196
    @manojtiwari5196 4 роки тому +609

    Sir u should publish ur own written physics book❤️...that will be too much helpful for us and future aspirants ✌🏻💫

  • @anilkumar_0703
    @anilkumar_0703 4 роки тому +559

    when teachers were teaching in institute and not understanding the concept.
    others -- "yar ab kya hoga "
    Me -- smiling and thinking , ab alakh sir se samjhunga and kal sabke samne hushyari marunga... 😜😜😜😂😂🤣

    • @shahinaparvin3237
      @shahinaparvin3237 3 роки тому +9

      Oo good
      alakh sir is the best teacher as a friend and a best explanation 🥰🥰🥰👍🏻👍🏻👍🏻😁

    • @anilkumar_0703
      @anilkumar_0703 3 роки тому +12

      @@shahinaparvin3237 yes dear , the next face of god = alakh sir 🤟

    • @beastinstincts3k
      @beastinstincts3k 3 роки тому +15

      Tere class students bhi alakh sir ki video dekh lenge to kya krega

    • @trisharox_2004
      @trisharox_2004 3 роки тому +3

      Oh dammm 😂🤣🤣🤣

    • @anilkumar_0703
      @anilkumar_0703 3 роки тому +3

      @@trisharox_2004 🤣🤣

  • @tanaypatel7192
    @tanaypatel7192 5 років тому +295

    Sir you are super 30 of UA-cam 😉

  • @whatsuitsmebest6934
    @whatsuitsmebest6934 3 місяці тому +6

    They will meet at t=2secs
    When the ball at the greater height is coming down and has covered 12m, and the lower ball going up has covered 28m

  • @user-bw6zw4jo4o
    @user-bw6zw4jo4o 5 років тому +418

    छोरो न्यूटन और आइंस्टाइन की बातें वे विदेशी थे लेकिन physics वाला चेनल और हमारे सर भारतीय है गर्व से कहो हम भारतीय है

    • @tradestalk
      @tradestalk 5 років тому +14

      to bhai videshiyo ke subscribers 1m + hote hi he we also have to subscribe our sir sir ke 1m touch as soon as posible kr do.

    • @ji9068
      @ji9068 5 років тому +2

      Thank you

    • @SKumar-tt4wk
      @SKumar-tt4wk 5 років тому +14

      Aare bhai padha to unhi ki bato ko rHe

    • @vivekjiitechnical
      @vivekjiitechnical 5 років тому +24

      Bura lage to maph karna
      Lekin yaha par deshi videshi mat karo kyuki yaha kisi ke dimag ki bat ho rahi hai
      Scientist yaha ke ho ya videsho ke always be respect warna unke bina aaj kuchh possible nahi hota bachpan se newton ke niyam padha rahe hai thoda to samjho unke bina kya engineering hoti aaj ki technology hoti
      Abhi bhi samjh nahi aa raha hai to chhod do youtube kahe videshi company par video dekh rahe ho chhod do android phone
      Vasudhaiv kutumbkam
      Sampurn earth is family
      Apne hi purvaj ki bat yad nahi rakhte ho aur bolte ho deshi videshi
      Jyada bol gaya to maph karna
      Desh se pyar karo *jai hind*
      *jai bharat*
      But kisi ke dimag ki bhi respect karna seekho

    • @siddharthverma3968
      @siddharthverma3968 5 років тому +5

      Are bhai pada to unhi ke bato ko rahe hai

  • @teekaramghuraiya102
    @teekaramghuraiya102 5 років тому +27

    शाबाश, बेटे ! ईश्वर तुम्हें स्वस्थ, प्रसन्न व आबाद रखें। आदर्श कार्य कर रहे हो। अपनी इस यात्रा को पवित्र बनाए रखना, क्योंकि तुम अवश्य ही एक मील का पत्थर स्थापित करने की ओर अग्रसर हो ! God bless u!

    • @thisisarjunbutwhythehellar6188
      @thisisarjunbutwhythehellar6188 4 роки тому +4

      **अद्भुत!!!**

    • @priyankachauhan755
      @priyankachauhan755 4 роки тому

      Why you use A -10 plz tell me

    • @thisisarjunbutwhythehellar6188
      @thisisarjunbutwhythehellar6188 4 роки тому

      @@priyankachauhan755 ?

    • @mdateeque3997
      @mdateeque3997 4 роки тому

      Those who are very clear with the concepts should definitely watch our videos and solve TYPICAL ADVANCED level questions.
      Even concepts are told in our channel by experienced faculties of Narayana.
      For Example: ua-cam.com/video/8AM-2ao1LpI/v-deo.html

  • @spandana1564
    @spandana1564 2 роки тому +127

    I'm in 11th right now. Everything is new to me. Since 2 weeks I've been struggling with this topic. I always wanted to have a clear cut understanding of the topic. Finally I understood it completely and all thanks to you sir. You are that kind of teacher who everyone desires. Thank you sir, i don't have words to explain how your video helped me.

    • @channelanonymous2457
      @channelanonymous2457 2 роки тому +15

      Brothers i am also present 11 and struggle it... Such a difficult chapter as we haven't study class 9 due to lockdown 😂😂... The hero of lockdown was pubg for us 😂😂😂

    • @spandana1564
      @spandana1564 2 роки тому +8

      @@channelanonymous2457 Nah it wasn't due to pubg or anything. It was difficult in 9th. Even when i focused the concepts were not clear

    • @tanuju3930
      @tanuju3930 2 роки тому +1

      @@spandana1564 arjuna jee 2024

    • @spandana1564
      @spandana1564 2 роки тому +1

      @@tanuju3930 i did not understand what you are saying here...
      But if you want me to join this .. I'm studying for Neet thanks for your suggestion

    • @ShakirBhat-wi4yg
      @ShakirBhat-wi4yg Рік тому

      😊

  • @My_world__study
    @My_world__study Рік тому +6

    5yrs old video gives me that knowledge that I can't get it from new videos with smart board ... Kuch to baat hai iss purane video me yuhi nhi ham bachhe fida huye alakh sir pe 😅

  • @prabalmittal6737
    @prabalmittal6737 2 роки тому +24

    17:32 Dear students there is a error it should be -13 as 7-20 is -13 plz correct it

  • @aryachoudhary4502
    @aryachoudhary4502 4 роки тому +504

    Watching this video in the time of Coronavirus. Hope everything will get normal soon🙏

  • @naveensharma2524
    @naveensharma2524 4 роки тому +13

    really how he teaches........CHALO BACCHO TUMHE FEEL DILATE H..... the concepts he thinks are hard he repeat almost ten time we students are so proud that we have a teacher like you.............................. thank you so much sir
    O SIRJI TUSSI GREST HO.............

    • @spandanroy9801
      @spandanroy9801 3 роки тому +1

      Exactly..the reason why he is the best

  • @Aravindh.9
    @Aravindh.9 7 місяців тому +6

    51:31 t = 2s & they will meet at 12m from the top of the tower or 28m from the ground.

  • @vorean_gaming4226
    @vorean_gaming4226 4 роки тому +16

    sir will be missing you after 2 years never met an interactive teacher like you

  • @viratishah9638
    @viratishah9638 2 роки тому +18

    Besttt lecture ever...this man can do anything...can change our future brightly....thank you soo much sirr!;❤️❤️

  • @dmukherjee8114
    @dmukherjee8114 4 роки тому +18

    Only this teacher does not focus on teaching all the concepts but gives a feel in the concepts and relates in real life.
    bhaiya, yeh Alakh Pandey sir hai. Shiksha ki Alakh jagah hai, thay aur rahenge.

  • @sujonkhan206
    @sujonkhan206 3 місяці тому +214

    Who are watching in 2024 july

  • @AnujSingh_5
    @AnujSingh_5 4 роки тому +572

    Teachers: Let's Derive How This Was So!!!
    Alakh Sir : Chalo baccho Tumhe Feel Dete h!!😁😁

  • @kusumhari6828
    @kusumhari6828 5 років тому +13

    hi bro.....thanks ......
    ANS:
    time ::::2secs
    distance:::28meters above ground and 12 meters below the wall

  • @malayprakash4612
    @malayprakash4612 4 роки тому +167

    ans of last question is 28 meter above the ground
    and -12 meter down from the top🤗🤗🤗🤗

  • @MadanBamnath
    @MadanBamnath 4 місяці тому +7

    Its 2024 still One of the best explanation of motion in 1-D

  • @welcometokoreandrama3369
    @welcometokoreandrama3369 4 роки тому +84

    17:23 ans -13m/s ☺️☺️

  • @user-kb6mv9wj4r
    @user-kb6mv9wj4r 4 роки тому +17

    For last two years,since published,the most understanding video for Relative Motion.

  • @Thatcrazywoman
    @Thatcrazywoman 3 роки тому +109

    this teacher is so adorable! Like the expressions and affects he give in between the lecture. For eg that train sound chuk chuk chuk chuk 😂😂. Too adorable!❤

    • @Gaurav-nt1nd
      @Gaurav-nt1nd 3 роки тому

      True

    • @kushpatel6567
      @kushpatel6567 3 роки тому

      What are you preparing for?
      Jee , neet or anything else?

    • @Thatcrazywoman
      @Thatcrazywoman 3 роки тому +1

      @@kushpatel6567 if you are asking me then. Yo, a NEET ASPIRANT is here. Wbu?

    • @kushpatel6567
      @kushpatel6567 3 роки тому +1

      @@Thatcrazywoman
      Best of luke !
      I am preparing for IMUCET.

    • @Thatcrazywoman
      @Thatcrazywoman 3 роки тому

      @@kushpatel6567 you too! BOL

  • @rishmitarajith8302
    @rishmitarajith8302 Рік тому +71

    I had always heard the name of PW but when i entered 11th in april i realised that pw and alakh sir are not just a yt channel but an emotion for iit jee and neet aspirants
    Thank you sir ❤

  • @ryckutuberxgt82
    @ryckutuberxgt82 Рік тому +40

    13:21. The student's speed with respect to Pandey sir is his JEE Rank.

  • @sohail8921
    @sohail8921 4 роки тому +848

    Police : why I want to chase him?.. I have a gun.
    Thief : pls sir.. Don't use gun.. We use relative velocity.
    Police : 😓

  • @IIt_Bombay_I_am_Coming
    @IIt_Bombay_I_am_Coming 6 місяців тому +3

    # Untold Greatest way of introduction on youtube.

  • @emotional_wreck
    @emotional_wreck 3 роки тому +55

    That damn FEELING of understanding the topic gives confidence about physics...THATS ONLY IN ALAKH SIR'S CLASS...
    ❤💜LOve from mysuru 💜❤

  • @macrorooms7818
    @macrorooms7818 5 років тому +141

    Police vaala nikamba tha ... Bataoo choor ko pakad hinahi paya 😂😂😍😍loved u physics vaale

    • @godbeerus2202
      @godbeerus2202 5 років тому +3

      @Animes Spy r/whoosh

    • @mdateeque3997
      @mdateeque3997 4 роки тому

      Those who are very clear with the concepts should definitely watch our videos and solve TYPICAL ADVANCED level questions.
      Even concepts are told in our channel by experienced faculties of Narayana.
      For Example: ua-cam.com/video/8AM-2ao1LpI/v-deo.html

  • @jayaarora2926
    @jayaarora2926 4 роки тому +32

    The best physics teacher of the world u r just like God for me sir may u live long n long aur hme uhi pdhate rhe

  • @omnamahshivay5625
    @omnamahshivay5625 3 місяці тому +129

    Who is watching in august 2024

  • @AbhayKumar-mp8xx
    @AbhayKumar-mp8xx 5 років тому +41

    Sir please post the videos of best questions of ch-1,2,3,4 from physics class11.

  • @AdityaRaj-rv1eu
    @AdityaRaj-rv1eu 3 роки тому +40

    Time 2s
    Position wrt to A -12
    Position wrt to B 28

  • @Harshasha1920
    @Harshasha1920 5 років тому +262

    17:30 there Should be -13

  • @faithsandloves
    @faithsandloves Рік тому +2

    Homework qs ....solution ....time A ND B MEETS= 2 SEC
    position they meet...accrding to A IT MEETS B whn it goes down to 12m
    Accrding to body B .WHN IT GOES UP TO 28m. It meets. Body A.
    Hence overal total dist given is 40m tht is 12m + 28m..= 40m
    Thank you alakh sir ...old never goes old... forever blessed❤❤

  • @tajammulkhanfans9140
    @tajammulkhanfans9140 4 роки тому +19

    The displacement of ball from tower is - 12m
    And , Displacement of ball from ground is 28 m

  • @ekanshoberoi4034
    @ekanshoberoi4034 2 роки тому +30

    For all those asking Yes this is the best lecture I have seen so far for Relative Velocity thanks Alakh sir 🙏

  • @devilvivek7936
    @devilvivek7936 3 роки тому +238

    everybody: he expained the concept in a very easy manner
    me: by mistake he wrote 20-7=14 like i do in the spelling of explained

  • @chessify3000
    @chessify3000 Рік тому +8

    0:10 Legends learning from a legend

  • @swetaindian9726
    @swetaindian9726 5 років тому +140

    Congratulations sir u got 1 million subscribers 🤘🤘😊

  • @sohebakhtar7823
    @sohebakhtar7823 2 роки тому +86

    Time =2sec
    Postion = 28m , -12m.
    Thank you sir for this lovely explaination❤️

  • @haidershafaq2606
    @haidershafaq2606 4 роки тому +201

    If physics wallah taught ips preparation he'd be police wallah🤔

  • @OnlystudyAimaiims
    @OnlystudyAimaiims 3 місяці тому +1

    Sir aapka he lecture samajh aataa hai or kese teacher ka aaj tak pura samajh nhi aayaa doubt raheta hai unmai aap Kai lecture mai doubt he nhi raheta question light ke speed sai ho jatai hai bena pen kai sir , you are god for me sir, dropper hu but aapkai he lecture dekhta hu saarai thank u so much sir for an amazing video ❤️❤️

  • @madhusmitamishra2515
    @madhusmitamishra2515 4 роки тому +16

    I have never seen people like u sir ..... who teach children without any profit......teachers like u can change the current situation of our nation sir....hats offfff.....u have made us in love with phy and chem....

  • @inshahussain1913
    @inshahussain1913 2 роки тому +15

    He doesn't only explain things well but makes us feel too!

  • @gayatrisharma29
    @gayatrisharma29 4 роки тому +137

    At 18:00 [7-20=-13m/s] is the answer .. 🙂

  • @supriyafrater8354
    @supriyafrater8354 Рік тому +2

    Generally everyone says to like n subscribe their channel at the end of the video but u r saying "if uh like the video, tho achi se pad raho"..Great to see that uh r expecting ntg much but the welfare of students❤

  • @deeuropefootball
    @deeuropefootball 4 роки тому +13

    51:00
    Time =2s
    The point where they meet is
    From body (speed 24m/s)=28m above
    From body (speed +4m/s)=-12m (means downwards)and if we sum the total length it will equal the relative distance b/w them

    • @pramodkumarhibare6791
      @pramodkumarhibare6791 2 роки тому +2

      Totally wrong..

    • @muawiyashaikh2229
      @muawiyashaikh2229 Рік тому +3

      @@pramodkumarhibare6791 correct hai bhai wo

    • @muawiyashaikh2229
      @muawiyashaikh2229 Рік тому

      Bro Apka answer mere saath match kr rha hai

    • @AnshuKumar-ej3yi
      @AnshuKumar-ej3yi Рік тому +1

      ​@@muawiyashaikh2229 are but bro 2sec me toh dono body upar jayegi toh dono positive ayega na from ground they will meet at 48m na?

    • @ManyaShah-s9i
      @ManyaShah-s9i 11 місяців тому

      @@AnshuKumar-ej3yi Woh neeche bhi toh ayega

  • @poras1513
    @poras1513 5 років тому +501

    Kids watch pradeep kstrapal
    Adults watch Walter lewin
    And legends watch physics wallah

    • @rishi2820
      @rishi2820 5 років тому +29

      Walter Lewin is beyond physics wallah don't compare him with physics wallah

    • @nabeelali6721
      @nabeelali6721 5 років тому +4

      @@rishi2820 No mahn

    • @rishi2820
      @rishi2820 5 років тому

      @@nabeelali6721 I didn't understand

    • @يشفينارشاد
      @يشفينارشاد 5 років тому

      Haha

    • @jalpapatel456
      @jalpapatel456 5 років тому +55

      Ultra legends dont even know the other 2

  • @abhishekbhatt9598
    @abhishekbhatt9598 5 років тому +170

    2015:- best book and teacher hc verma
    2020:(sir)- hold my beer

  • @adithyag2062
    @adithyag2062 4 роки тому +333

    The number of haters shows how many evil minded filty people are there in our society, how can you dislike someone who is not enjoying a luxurious life which he can get it in seconds and is working hard day and night for the underprivilaged students of the society, even bharath ratna award is small in front of the selfless work sir is doing.

    • @ssubhashini6121
      @ssubhashini6121 4 роки тому +22

      Yes you are absolutely correct. Couldn't agree with you more. Sadly, that is how these people (haters) are and unfortunately they're not liable to change. Ungrateful and thankless that they are!
      But let us all just remember one thing--Even if some(maybe a few hundreds) hate Sir, millions of us love Sir for all that he is doing for us, which of course is more significant.

    • @prerakbhatt5937
      @prerakbhatt5937 3 роки тому +1

      @@ssubhashini6121 ok

    • @priyanshujain5597
      @priyanshujain5597 3 роки тому +3

      @Bala P well very few of the students will see in english
      I think he is going towards greater good as making hindi vids will help more of the students and also will generate more income,but the 2nd reason is not justified bcoz of his nature, so the former reason fits well

    • @ManuAyu255
      @ManuAyu255 3 роки тому +4

      Sir deserves Bharat ratna award

    • @ManuAyu255
      @ManuAyu255 3 роки тому +6

      I guess the haters are sir's neighbourhood children bcoz unke liye toh. "GHAR KI MURGI DAAL BARABAR HAI "

  • @sangeetagupta4376
    @sangeetagupta4376 4 роки тому +23

    Time is 2s when they will meet and position is 12m from top and 28m from down..it was same as previous question which alakh sir gave ..
    Relative velocity 1D concepts cleared ..amazing video ..🙂🙂🙂

    • @swatirohit3277
      @swatirohit3277 2 роки тому +2

      Yes right ans

    • @geeky_001
      @geeky_001 Рік тому +1

      I still don't understand how? Vab will come out to be -20 as Va=4m/s and Vb=24m/s so subtracting Vb from Va would give -20 and thus time would come out to be -2s which cann't be possible (although the magnitudes are same as answers as well if negative sign is not considered) . please explain.
      Edit: Proper answer can be calculated when Vba, Aba and Sba are considered. without neglecting the negative signs above the correct answers couldn't be brought up. please explain.

    • @MrMark-cz3ev
      @MrMark-cz3ev Рік тому +1

      @@geeky_001 Vab means velocity of a wrt b so we take the displacement to be negative and thus time becomes positive ie t = -40/-20 = 2s

  • @nabanitakundu6761
    @nabanitakundu6761 2 роки тому +84

    TIME 2 SEC
    POSITION 28M AND -12 M THANK YOU GURUJI!

    • @alphachad69
      @alphachad69 2 роки тому +3

      @Kalp Patel calculate the answer with respect to velocity 4ms^-1

    • @paramitasamui3605
      @paramitasamui3605 2 роки тому +1

      its correct

    • @wtfffffffffffff
      @wtfffffffffffff Рік тому

      @@kalppatel6969 u want image ??

    • @sandeep-vy7qk
      @sandeep-vy7qk Рік тому

      Correct

    • @asthajoshi5144
      @asthajoshi5144 Рік тому +3

      Uab=4-24 =-20
      A=0
      T=d/s___distance is given -40
      T=40/20=2
      S=(ua)t-1/2t^2____s=4×2-1/2×10 ×4
      S for ua =-12
      We can apply sam eq for ub
      S for ub =28

  • @BtechMechanicalStudent
    @BtechMechanicalStudent 4 місяці тому +373

    Who are watching in 2024 June ❤

  • @wildcos9255
    @wildcos9255 5 років тому +45

    Sir I am very thankful to u ..my marks are improved from 30 to 88 . ..and I am sure it will be 100 after some days,..

  • @milanbuch306
    @milanbuch306 4 роки тому +425

    unacademy : Don't tell anyone ,we also watch physics wallah for teaching others 😂 😂 😂