i have a physics test tmr and this video saved me a lot of time because the teachers at our school teach at poor quality, this is why we should be investing in digital forms of learning, thank you for the help
You're a real life saver I have exams coming up and your channel has helped me more than the lecturers I'm literally learning a 2 month lecture in few days😂😂💪
Man you are so awesome. I really admire your passion in teaching and somewhat envy you :(. I don't know your age or if you're already in college or what, but you sound just like an average senior high school student. So the fact that you've already nearly-mastered all branch of sciences and also math is truly mesmerizing. Not to mention you now teach what you already have known, or you're just really a fast learner who read, study, and teach what you learned. Nonetheless I hope you the best! Keep doing what you're doing 'cause it fuels me to learn more about science (especially Chem). Last 4 years, I have been trying to master every branch of Math up to Calculus now that I'm in the 12th grade. But then I realize that I need to be a jack of all subjects to be the top student in my class. How I wish you also make Biology videos hehe :)
as someone who did not do physics and focused on the social sciences, this is so exciting and just darn incredible to hear. yall are dealing with some interesting ish.
Same except my classes are more focused on economics. I'm filled with regrets but im now going back to pursue science. Everytime I learn something new about physics i can't sleep because I'm so in awe of how everything fits
For starters, thank you for yet another great video. IMHO, I think your channnel is one of the best science and maths channels on UA-cam. 1. I do have a slight problem with your skater analogy. You do not have to be standing on ice to "feel" (0:42) the reaction force, from throwing the ball. I would possibly have clarified the role of friction, or rather the lack thereof, in this case a bit better. 2. Regarding the astronaut analogy, you correctly state the assumption that there are no other planets nearby (3:16) so it is just out of interest then to note that, in a normal universe filled with planets and all sorts of other stuff, throwing the ball "down" will NOT move the astronaut "up", it will merely increase the eccentricity of the astronaut's orbit* AND most likely not even in the intended direction. I can envisage a scenario for e.g. where throwing the ball "up" will also move the astronaut "up". * ALL objects in space are ALWAYS in a net trajectory influenced by gravity from ALL other objects in space.
if Sarah is exerting a force of 540 N west, wouldn't you plug in the -540 N for the force and then her acceleration would end up being negative 6 m/s? (ie. she's being pushed backwards)
I just wanted to ask, do you also teach X-camp coding (java)? I think I have heard your voice before, thank you for your help as a teacher! Is it really you though (please respond)?
With equations like F=MA, why use newtons for the force and not kg/meter? Does the newton just so happen to work without a crazy conversion? What a coincidence? How do kgs measure mass but lbs do not? Is mass the amount of atoms in an entity or the amount of electrons, or something else?
In your example Lucy applies 540 N force on Sarah and Sarah just standing there. Is that correct? so that is how the equation ended up as you have it. What if Sarah wasn't just standing there but also exerted say another 200 force on Lucy at the same time. How would your equation would like then? Thank you.
Sorry if this is a dumb question but at the end acceleration was measured in m/s2 and the unit depends on what the velocity is measured in right? So how do we know if it's m/s or not?
Got a fun and "harder" question for u to solve ;D A woman is skiing down a snow-covered hill. The coefficient of kinetic friction between the skis and the snow is μk = 0.0800. The hill is at a 60.00° angle from the horizontal. The skier's mass is 55.00kg. What is the magnitude of the force along the skier's direction of motion?
A hammer travelling with 50m/s strikes a nail and comes to a stop. Calculate the force of the hammer on the nail and the nail on the hammer. Which one is postive and which one is negative
Hello! I just want to ask something because I am confused regarding with the result in example, for sarah since it has a negative force, doesnt mean that its acceleration would be negative also? Is this correct or not? I hope you'll be able to read this.
Since Lucy exerts a force in a positive direction onto Sara, Sara would accelerate in a positive direction at a rate of 6m/s^2. But since the force Sara exerts of Lucy is in a negative direction, Lucy would accelerate in a negative direction at a rate of 9m/s^2.
This can't be true. NIST (National Institute of Standards and Technology) have proven that newton's law is incorrect. They stated that WTC 1 & 2 collapsed at speeds just short of free fall due to the smaller, less dense portion of the 17 upper floors took out the bottom stronger and more dense 93 floors in 11 seconds. Further they state that wtc7, 47 story's high collapsed at free fall speeds on 6.5 seconds due to office combustion fires on several floors. If you take a loom at the collapse of all three buildings, including wtc7 where No plane hit you will see that the law of motion did not exist that day. It was as if newtons law was suspended for that one day. Take a look
So lets say I am just standing and not exerting any force on someone at all and some guy comes and pushes me with a 1000 N force why do I fly 2 feet back. I exerted no force at all. Or you mean the fact that because I was standing there with my mass and then I accelerated 2 feet back shows that I had applied 1000 N force and the combined push back of force on me ( My mass X that acceleration) was what I got back? Is that how it works?
You did exert a force. It might not have been on purpose, but if something is Contacting you, you're exerting a force on it. Imagine trying to exert a force if 1000 newton's onto open air. You simply couldn't. You have to have something to push against, and whatever you push against pushes back just as hard. Now in his example, the reaction wouldn't really occur quite like that unless the people were in space. But as long as you have two feet on the ground you can redirect the force that is pushing you to the ground.
In the case of the ball and the person it's a much easier visualization. But in the case of the rocket or balloon, the gasses still have masses. So think of it as if the balloon is throwing the air, which is a tiny mass and therefore must be moved very quickly, to move itself. Actually a balloons mass is tiny too. Rockets are much more impressive. The mass of fuel on them is not at all tiny. And the speed is amazing. The fire coming out of a rocket engine is about as hard as an eraser.
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i have a physics test tmr and this video saved me a lot of time because the teachers at our school teach at poor quality, this is why we should be investing in digital forms of learning, thank you for the help
we need to invest in teachers that actually teach lol
Word!! Newman, you called for digital learning and 2020 heard you. that's newton's law
same
I just found this, and it is going to save my college physics grade.
Did it work?
These are college physics?
@@NoLongerVoid you do know that they teach basic physics concept in Physics 1 right?
We have this in 9th std
@@Ayushi-sc4gt you realise in universities they recap basic concepts, stop trying to boost your own ego
You're a real life saver I have exams coming up and your channel has helped me more than the lecturers
I'm literally learning a 2 month lecture in few days😂😂💪
Same here
It’s nearly 11pm at night got a exam tmr at 9:30 am, first period and ur out here saving grades. Can’t thank you enough man 🤟🏾💙 W teacher
sukran habibi, got a physics midterm tomorrow and this really helped me out
Man you are so awesome. I really admire your passion in teaching and somewhat envy you :(. I don't know your age or if you're already in college or what, but you sound just like an average senior high school student. So the fact that you've already nearly-mastered all branch of sciences and also math is truly mesmerizing. Not to mention you now teach what you already have known, or you're just really a fast learner who read, study, and teach what you learned. Nonetheless I hope you the best! Keep doing what you're doing 'cause it fuels me to learn more about science (especially Chem). Last 4 years, I have been trying to master every branch of Math up to Calculus now that I'm in the 12th grade. But then I realize that I need to be a jack of all subjects to be the top student in my class. How I wish you also make Biology videos hehe :)
Country name
as someone who did not do physics and focused on the social sciences, this is so exciting and just darn incredible to hear. yall are dealing with some interesting ish.
Same except my classes are more focused on economics. I'm filled with regrets but im now going back to pursue science. Everytime I learn something new about physics i can't sleep because I'm so in awe of how everything fits
Thank you. These examples all made so much sense
Bestest page I ever come across
For starters, thank you for yet another great video. IMHO, I think your channnel is one of the best science and maths channels on UA-cam.
1. I do have a slight problem with your skater analogy. You do not have to be standing on ice to "feel" (0:42) the reaction force, from throwing the ball. I would possibly have clarified the role of friction, or rather the lack thereof, in this case a bit better.
2. Regarding the astronaut analogy, you correctly state the assumption that there are no other planets nearby (3:16) so it is just out of interest then to note that, in a normal universe filled with planets and all sorts of other stuff, throwing the ball "down" will NOT move the astronaut "up", it will merely increase the eccentricity of the astronaut's orbit* AND most likely not even in the intended direction. I can envisage a scenario for e.g. where throwing the ball "up" will also move the astronaut "up".
* ALL objects in space are ALWAYS in a net trajectory influenced by gravity from ALL other objects in space.
YOU ARE AWESOME.
You're so helping in all branches 💛
Who dislikes his videos? That's the real head scratcher.
Imagine you have a ball in your hand 🤣
Genius chemistry professor
gosh I'm so thankful I found this channel
This guy is better at explaining than my teacher he's a savior
we love you the organic chemistry tutor
3 years later and you still are my shield and sword... THANK YOU 🙏🏼
This is awesome men. This is my topic today. Thankyou thankyou thankyou.
"so now you know how a rocket works"
Yeah dude, imma start creating one.
Imma go to mars, thanks to this dude i dont have to live in this cruel world ever again
Yes sir is best
After that sentence i was like cool....i can be astronaut now😆😁😁
Wow rocket science is not that hard.
@@EmilJustinCerio;(
¡Muchas Gracias amigo! ¡Estoy muy agradecido!
THANK YOU NO ONE ELSE MADE SENSE EXCEPT YOU
This man is powerful
Thank you so much this detailed video really helped me out with solving my physic hw problem.
Thank you you really help me today
"so now you know how a rocket works"
Me: *Applies for a job at NASA*
Thx, dude i think i am going to pass my exam
did you?
Did you?
Thank you so much and I wonder why are we learning this in sixth grade
if Sarah is exerting a force of 540 N west, wouldn't you plug in the -540 N for the force and then her acceleration would end up being negative 6 m/s? (ie. she's being pushed backwards)
That's what I did, you still get the same answer it's just a different direction. So it will be 6.0 m/s^2 (backward)/(left)
you are awesome sir,,,l would like to have more of these.
Well explained..Thank-you
I have a question, what is the cause of reaction force, like why is a reaction force is generated(ik not the right term)
The whole mass acceleration thing has me thinking of how the fat kids were slow runners and the small ones were really fast lol
Not funny
@@jirachanonanurakdaenthai1121 you're fat aren't you
U are rude I bet that u are very cruel
@@punithpalam808 i can be, and I bet you're obese as well aren't you?
@@gringojoubert8555 no mercy💀💀
you are literally amazing, thank you!!!
Thanks a lot!!!
He is a such life saviour 😄
10:39 why Sarah acceleration is not negative, given a is a vector quantity?
I was about to ask the same question but I couldn’t find an answer….
Sir in your example 1 in this video, the force of Sarah supposed to be -540N right, and her acceleration to be -6mls^2
Thank you so much sir it's a big help please make more videos.
This was the only vid that helped.
great job sir
I just wanted to ask, do you also teach X-camp coding (java)? I think I have heard your voice before, thank you for your help as a teacher! Is it really you though (please respond)?
Nope. I don't teach it.
waaaaaowwww …. you are just ammmmazing❤️
Best explained
U are absolutely great 👍
Thanks
Thank you so much😊
Thank you so much
With equations like F=MA, why use newtons for the force and not kg/meter? Does the newton just so happen to work without a crazy conversion? What a coincidence?
How do kgs measure mass but lbs do not? Is mass the amount of atoms in an entity or the amount of electrons, or something else?
when are you going to go through this in physics
??
THANK YOU
What is the difference between the action-reaction force and equal and opposite one)
Thank you!
Thank you
don't worry, it's just physics, not rocket science. Oh wait... jokes aside this is a super helpful and well explained video
I use my tank's cannon to accelerate faster towards the opposite direction.
In your example Lucy applies 540 N force on Sarah and Sarah just standing there. Is that correct? so that is how the equation ended up as you have it. What if Sarah wasn't just standing there but also exerted say another 200 force on Lucy at the same time. How would your equation would like then? Thank you.
Thank You Sir
Sorry if this is a dumb question but at the end acceleration was measured in m/s2 and the unit depends on what the velocity is measured in right? So how do we know if it's m/s or not?
no, always acceleration is in m/s^2 and forces are in Newtons etc. Ssorry if I'm late/didn't explain properly
What would each of the gals acceleration be if both had their legs sunk a foot down in a very thick mud? Please calculate? Thank you.
I can't believe i get it , you are a genius
Got a fun and "harder" question for u to solve ;D
A woman is skiing down a snow-covered hill. The coefficient of kinetic friction between the skis and the snow is μk = 0.0800. The hill is at a 60.00° angle from the horizontal. The skier's mass is 55.00kg. What is the magnitude of the force along the skier's direction of motion?
Shiama I. Wow ur cool, here’s some attention
@@jehehe76tcixi
Came here to let ppl solve more difficult questions like they ask. Hby? Came here to add wrinkles on your face being that grumpy?
@@jehehe76tcixi mgsin(x)
What is the difference between the action-reaction force and equal and opposite one?
I know it's a year late but this has been a question I've been pondering about for a while now also.
Thanks amarer
I don't want to seem like a weirdo but you have such beautiful voice 😅😊
Thanks for this video, now I'm going to build a rocket and be a rocketman
If you to space is empty how can U booster rocket in vacuum the Space
you saved me my bro
you're the best!
Good video
Now I know how rockets work!
A hammer travelling with 50m/s strikes a nail and comes to a stop. Calculate the force of the hammer on the nail and the nail on the hammer. Which one is postive and which one is negative
Is lucy side supposed to have -540N since its to west?
thanks man
now imagine you have a ball in your hand
ok now what
balls
Bro😂
U are really great
when the rocket burns and get fire on it , what is the cause of the fire ??????
I got full marks just by watching three of ur videos 😭💀
May I ask where did you get the square? Thanks
Nobel Prize 🏆‼️
This dibbot help WHATBIS A DEFINITION FOR REACTION
Aight next time I'm taking a lot of balls with me on the boat
do you have exercices about this with the correction ?
Hello! I just want to ask something because I am confused regarding with the result in example, for sarah since it has a negative force, doesnt mean that its acceleration would be negative also? Is this correct or not? I hope you'll be able to read this.
Since Lucy exerts a force in a positive direction onto Sara, Sara would accelerate in a positive direction at a rate of 6m/s^2. But since the force Sara exerts of Lucy is in a negative direction, Lucy would accelerate in a negative direction at a rate of 9m/s^2.
@@vikasha5064 Does that mean that Sara will move away from Lucy at 15m/s^2 and vice versa
You are absolutely amazing
Earth move 65.000.000 ?
Thanks saved me from another hw detention
I am from India
Can you be my friend
Lol
England is my city so it's a bit far.
My dream is to come England in future
This can't be true. NIST (National Institute of Standards and Technology) have proven that newton's law is incorrect. They stated that WTC 1 & 2 collapsed at speeds just short of free fall due to the smaller, less dense portion of the 17 upper floors took out the bottom stronger and more dense 93 floors in 11 seconds.
Further they state that wtc7, 47 story's high collapsed at free fall speeds on 6.5 seconds due to office combustion fires on several floors.
If you take a loom at the collapse of all three buildings, including wtc7 where No plane hit you will see that the law of motion did not exist that day. It was as if newtons law was suspended for that one day. Take a look
I'm literally in 6th grade and understand all this
Wow
How is the force equal??
So ap = durability?
1969 Apollo 11 We don't have Internet we don't have live For the entire world?
The rock to go up in a space he take 20 times as speed song
thanks sir...
Thankyouuuuuu.
SARAH! The horses have left the barn
Thank youuu
How you gonna flow in a space before never be in a space
So lets say I am just standing and not exerting any force on someone at all and some guy comes and pushes me with a 1000 N force why do I fly 2 feet back. I exerted no force at all. Or you mean the fact that because I was standing there with my mass and then I accelerated 2 feet back shows that I had applied 1000 N force and the combined push back of force on me ( My mass X that acceleration) was what I got back? Is that how it works?
You did exert a force. It might not have been on purpose, but if something is Contacting you, you're exerting a force on it. Imagine trying to exert a force if 1000 newton's onto open air. You simply couldn't. You have to have something to push against, and whatever you push against pushes back just as hard. Now in his example, the reaction wouldn't really occur quite like that unless the people were in space. But as long as you have two feet on the ground you can redirect the force that is pushing you to the ground.
If these forces are equal,(in case of a rocket or a balloon)do net forces equal zero.If so,how does it move forward ?😖confused.
In the case of the ball and the person it's a much easier visualization. But in the case of the rocket or balloon, the gasses still have masses. So think of it as if the balloon is throwing the air, which is a tiny mass and therefore must be moved very quickly, to move itself. Actually a balloons mass is tiny too. Rockets are much more impressive. The mass of fuel on them is not at all tiny. And the speed is amazing. The fire coming out of a rocket engine is about as hard as an eraser.