omg the way the audio and visuals are so clear that its insane(been skimming through other vids as well and i abs find cognito to be the most cleanest yet!)
If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/p2-gcse-aqa-h-t_3.04. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom
@@mythicpulse-i9o just because he learned at a slower rate than you does not mean he is dumber than u, in case you are thinking of that ( which I know you are lol). He probably has way better grades than you, for all you know. So you shouldn't judge someone by their learning rate. Who knows, learning slower than some people could prove to be beneficial to ones self.
If it was in hours (let’s say an aeroplane was flying at 380mph for 9 hours and you would need to find the distance) would you make the hours into seconds so would you do 380x540?
Hi, it depends on the units that the question asks for. In the question that you mentioned, the 380 mph is already per hour, so you would just multiply is by 9, to find that the plan travels a total or 380x9 = 3420 miles. Sometimes though you may have to convert hours to minutes or seconds, and distances like km into m.
help i have two questions how do we know what length to draw the tangent? and when finding the gradient from tangent like why at 2:42 the blue dotted line why did it start from where it did on the tangent line why not from like the ends of the tangent line? is there a specific reason why rose blue dots to find distance started at those parts of tangent line?
I know how to do it now 1) draw the tangent until the end of the graph 2) PLOT a point on the number of seconds given. 3) CHOOSE YOUR OWN POINTS, so you can choose the amount of distance you want (it could be anywhere but choose a sensible one) 4) find the difference in vertical and horizontal between the line you have chosen and the line that was given. 5) Divide them vertical/horizontal 6) On your answer sheet you should get a number between something, e.g 20-25. You should have the number between it if your right (it could involve decimals).
It doesn't matter how long we draw the tangent line. We're just using it to find the gradient (or you might prefer "steepness") of the green curve at that particular moment. That tangent line is straight, so it's the same gradient all along it's length, no matter how long it is. All that matters is that where it touches the green line, it's the same steepness/gradient. As for where the blue lines were, I'm guessing he had an eye on the time axis and wanted the lines to go down to 6s and 9s, so it was a nice easy 3s difference.
Sorry for the slow reply. As mentioned above, it doesn't matter how long you draw the tangent, as it's a straight line - the gradient will always be the same, no matter the length. We chose 6 and 9 seconds because we knew that would give a simple-to-understand 3 second difference which would help make a clear video :)
An incredible video, surely, and I loved it. However, I still have doubts regarding the concept of tangents, and their applicability, and hence request you to clarify how it is used with a non-uniform gradient. Hope you'll be able to clarify that
this helped me so much cause in cgp they write it so unclear like i didn't even know what a tangent is anyways thanks (ps the world would be in shambles without you)
I have a question. In my textbook (and class) there is a different method of finding the speed out, but I don't get that one either. It says speed = gradient of distance - time graph. And then there are four steps which tell me to find the straight section of the graph and draw horizontal and vertical lines to complete a right-angled triangle. So can you please explain this?
the gradient of the distance-time graph is the speed. so basically you can find the speed by finding out the gradient of the line. if you don't know how to find the gradient of a line then maybe search it up because its more a maths thing than science. sorry i wasn't sure how to explain but i hope it helps! :)
No; as you increase the length of the tangent, you increase BOTH the time and distance travelled variables for that line. This means that there is no net change. Think about it visually using the graph in the video.
Hi, very useful - It's a long time since my GSCE maths days - I wanted something to verify my separate calculation and I am now a step nearer. However, I need to go further. A car collided with my brother on his bike. I know the distances and the speed of the bike but the car's turning speed is claimed by witnesses to be 0 mph (doubtful), 5 mph, 10 mph or more. Is there a way to show this on the graph or do I need to calculate v1 & v2 . Any help greatly appreciated.
ik Its too late okay but .. alot of pple in this comment section seem to be understanding what is done here but I can't really understand the part where uu calculated the 'tension' (if im correct with spelling) around 2:30 ...plz help 😭
So a straight line is when the object stops. A diagonal line going up is acceleration, and a diagonal line going down is deceleration and a horizontal line is when the object is stationary?
When you have a doubt in class😮 Teacher: how many times i am gonna taught this to you???!! Random man on youtube : i will teach you my son/daughter By the way this video helps me so much in exam that's why i am writing this.😅😅
yes, the length of the tanjent can be drawn to infinity, meaning that u can draw the tangent small or big or medium, or however long u want it to be, because the graident will be the same, no matter how long the tangent is@@MsHustle247
God I'm never watching my local education channel again they take half an hour to explain the same point that you explained in five minutes. besides a single part of a lesson is like 2 hours. oh they are super boring. besides I can choose the point that I want to know super easily. may god bless this channel.
Ok this literally helped me with my hw. I had no idea what my tr was saying.
Same lol
ikr
Man’s acc uses this for hw 🤣💀
Same
Same here
omg the way the audio and visuals are so clear that its insane(been skimming through other vids as well and i abs find cognito to be the most cleanest yet!)
If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/p2-gcse-aqa-h-t_3.04. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
- Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on.
- Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like.
- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A comprehensive bank of past exam papers, organised both by year, and also by topic.
Amadeus & Tom
Hey cognito , can u use differentiation to find a gradient at a specific point instead of drawign tangents ??
@@terabaaphun2903yes I also wanted this
searching for weeks to find the ONE helpful video and i found it, great because now i can pass my science class semester!
I've been trying to understand this for 4 months. you've cleared it up in less then 10 mins. I'm so grateful.
4 months?🤣🤣🤣🤣🤣🤣
@@mythicpulse-i9o just because he learned at a slower rate than you does not mean he is dumber than u, in case you are thinking of that ( which I know you are lol). He probably has way better grades than you, for all you know. So you shouldn't judge someone by their learning rate. Who knows, learning slower than some people could prove to be beneficial to ones self.
@@enyplayz1514 you didn't understand what i meant, i meant this video makes us understand about this topic easily.
@@mythicpulse-i9o chill guys dont go personally
@@enyplayz1514 Try not to start a fight for no reason.
THIS HELPS SO MUCH I FINALLY UNDERSTAND
103 takis are fanum tax
You are brain rotteing innocent students@@fjskpqc
It covers everything in a gcse portion...thank you SO MUCH!!
When your teacher keeps talking whilst your watching the video
so true xD
To look like they understand💀😭
Wdym
True
Man thats so easy understandable and will help me in my exams
Nice profile pic
Rate mine@@venture9700
Remember Allah abundantly, that you may be successful
Thank you so much have a physics test tomorrow and this really helped!
THIS IS THE BEST VIDEO FOR THIS TOPIC I WAS STRUGGLING SM BUT I LITR UNDERSTOOD EVERYTHING AFTER LISTENING JS ONE TIME THANKSSS
I understand but it won't be precise. As for the tangent, we won't know how long we should draw. So it will only come as average?
I’m on a zoom call right now while having to watch this, I can’t focus lol
Lmao.
When I see a number u already lose intwrent.
THANK YOU SO MUCH!!! I have physics final tomorrow and this saved me
Is a straight line and sloped line the same? Becuase sloped line shows movement and for a sloped line m is shallow
A bit late but a straight line is stationary and sloped is moving
Hope this helps others
@@Zoeva37 a bit late but i think he ment the first line
brilliant you kept it short and covered everything we need to know
If it was in hours (let’s say an aeroplane was flying at 380mph for 9 hours and you would need to find the distance) would you make the hours into seconds so would you do 380x540?
Hi, it depends on the units that the question asks for. In the question that you mentioned, the 380 mph is already per hour, so you would just multiply is by 9, to find that the plan travels a total or 380x9 = 3420 miles.
Sometimes though you may have to convert hours to minutes or seconds, and distances like km into m.
Cognito ok thank you 😊
Or you could also try converting km/hr to m/s
BRO YOURE SO GOOD THAT IM FINNA TURN AUTISTICCC HOW TF DO YOU EXPLAIN ALL OF THAT IN LIKE 4 MINS WHEN MY TEACHER COULDNT EXPLAIN IN 6 HOURS
Simple and direct. Thanks
3:14 onwards is summary
help i have two questions how do we know what length to draw the tangent? and when finding the gradient from tangent like why at 2:42 the blue dotted line why did it start from where it did on the tangent line why not from like the ends of the tangent line? is there a specific reason why rose blue dots to find distance started at those parts of tangent line?
I have the same question
@@a_active9904 i guess we’ll never know
I know how to do it now
1) draw the tangent until the end of the graph
2) PLOT a point on the number of seconds given.
3) CHOOSE YOUR OWN POINTS, so you can choose the amount of distance you want (it could be anywhere but choose a sensible one)
4) find the difference in vertical and horizontal between the line you have chosen and the line that was given.
5) Divide them vertical/horizontal
6) On your answer sheet you should get a number between something, e.g 20-25. You should have the number between it if your right (it could involve decimals).
It doesn't matter how long we draw the tangent line. We're just using it to find the gradient (or you might prefer "steepness") of the green curve at that particular moment. That tangent line is straight, so it's the same gradient all along it's length, no matter how long it is. All that matters is that where it touches the green line, it's the same steepness/gradient. As for where the blue lines were, I'm guessing he had an eye on the time axis and wanted the lines to go down to 6s and 9s, so it was a nice easy 3s difference.
Sorry for the slow reply. As mentioned above, it doesn't matter how long you draw the tangent, as it's a straight line - the gradient will always be the same, no matter the length. We chose 6 and 9 seconds because we knew that would give a simple-to-understand 3 second difference which would help make a clear video :)
Great video! This topic is very confusing so thanks very much!
if only all teachers were like this.
This video has been uploaded for more than 3 years and it’s still saving life’s 😂
So true
Your explanation is great, wish my teachers explanation was like yours
I did my mocks and hopefully went well cause of this
Ahh good luck Buzz! Wishing you the best mate :)
@@Cognitoedu🪄
this helped me SO MUCH in my ks3 assessment THANK YOU!!!!
Glad we could help TNT!
Literally you helped me in every paper and I scored A* grade in all!
Congratulations
An incredible video, surely, and I loved it. However, I still have doubts regarding the concept of tangents, and their applicability, and hence request you to clarify how it is used with a non-uniform gradient. Hope you'll be able to clarify that
this helped me so much cause in cgp they write it so unclear like i didn't even know what a tangent is anyways thanks (ps the world would be in shambles without you)
Really happy you found it helpful - thanks for the comment :)
Thanks this helped me in preparation for exams
I have a question. In my textbook (and class) there is a different method of finding the speed out, but I don't get that one either. It says speed = gradient of distance - time graph. And then there are four steps which tell me to find the straight section of the graph and draw horizontal and vertical lines to complete a right-angled triangle. So can you please explain this?
the gradient of the distance-time graph is the speed. so basically you can find the speed by finding out the gradient of the line. if you don't know how to find the gradient of a line then maybe search it up because its more a maths thing than science. sorry i wasn't sure how to explain but i hope it helps! :)
@@jess2320 y=mx+C
But doesn’t that mean that your speed can vary depending on how long you draw your tangent?
I don't think so as then the distance and time you use would change along with it, however im unsure.
No; as you increase the length of the tangent, you increase BOTH the time and distance travelled variables for that line. This means that there is no net change.
Think about it visually using the graph in the video.
THIS HELPS SO MUCH I FINALLY UNDERSTAND °THANK YOU
YAY 🙌
Omg soo useful vedio!!! I was literally searching for the best video, and now I have it💜
Yeah
@@armyaseel7bts army?!!😭💜😭
But how long should be the tangent, how can we know the size of it before making it to find the speed for a curve
THANKKK YOUUUUU SOOO MUCH I AM SO MUCH FICKIHG STRUGGLING WITH PHYSICS ... YOU HELPED ME AGAIN COGNITO MAN
so for finding the tangent on a line, you can pick any points? it doesnt matter which 2 points you choose?
❤❤❤❤thank you 🙏 very much now l have an idea about distance time graph please teach me all about graphs a video please
My teacher said if i couldnt understand it from her no one else could explain it to me. Boy was she wrong
Hi, very useful - It's a long time since my GSCE maths days - I wanted something to verify my separate calculation and I am now a step nearer. However, I need to go further. A car collided with my brother on his bike. I know the distances and the speed of the bike but the car's turning speed is claimed by witnesses to be 0 mph (doubtful), 5 mph, 10 mph or more. Is there a way to show this on the graph or do I need to calculate v1 & v2 . Any help greatly appreciated.
Thank you sir it makes me easy to understand the concepts I hope it may helpful in my neet UG
Sir what it (9-1) meams
9-1 is the GCSE grade basically. 9 is the highest grade (think of it as an A*) and 1 the least. I think that’s the 9-1 you’re referring to anyway.
Nah it means o1
That made me understand it very good (the best)😊😊
Watching this at Morning, hour before exam.
ik Its too late okay but .. alot of pple in this comment section seem to be understanding what is done here but I can't really understand the part where uu calculated the 'tension' (if im correct with spelling) around 2:30 ...plz help 😭
I love this channel!
Thanks Edwin!
So a straight line is when the object stops. A diagonal line going up is acceleration, and a diagonal line going down is deceleration and a horizontal line is when the object is stationary?
Literally the basics of calculus 3:00
This video was very helpful, thank you 😊😊
Thanks mate i got my gcse physics on the 25th of may
The problem is that i dont know English so much but I love science physics especially about the space
CHINNIAH SIR IS THE BEST SIR IN THE WORLD
Gma
GMA!?!
🤗🥳 you are Amazing!
Totally agree
I understand these things well but come here for better understanding and great drawings for my notes... new subscriber
Ah thanks Alishba!! 🤩
best than our teacher
Bro im literally seeing myself in my graduation attire right now fr🥲
Does the curve in a distance-time graph represent changing or constant acceleration?
Thank you so much ❤️🧡💙💜💚
thanks a lot man this helped me alot
Thanks for this
2:52 how to find distance like how we'll know how much distance is there
When you have a doubt in class😮
Teacher: how many times i am gonna taught this to you???!!
Random man on youtube : i will teach you my son/daughter
By the way this video helps me so much in exam that's why i am writing this.😅😅
so when picking a point on the tangent to calculate can it be any point?
Thank you man 😎😎🥳
can u please help me with the tanget part
still need the explaination?
@@raspberry1054 xd that was when i was in 8th , anyway thanks
@@atriumgangsterz1939 lmao np
thats like 1 year ago, u make it sound like it was 6 years ago no offense😂 tho u made me laugh a bit so thx for that lol@@atriumgangsterz1939
Still using these vids to this day 😂
I just wanted to ask that is it really necessary to draw a tangent bcz we can also find it normally by looking at the graph??
best video for kids
kids?? man u is smart, this shit gsce level xD
What's the length of the tangent supposed to be? does the length matter?
thank u so so much i was abt to fail physics until i saw this vid
2:51 how do u know that the distance is 12m
This was so useful, but I sometimes find the sound of his voice fades and some words are difficult to hear, not sure if that's just me!
Why is the gradient 0 at the stationary point
because there is no movement no distance travelled
How to know how long the tangent?
Very helpfull for me❤
Is the speed time graph the same as the velocity time graph?
I dont think so i know im late and you probably know how to do it already
Very helpful thank you so much
im on science class rn im watching this lmao help
Thanks 🎉❤
how did u find the 12 for change in distance?
i dont understand the exam questions that distance and speed time graphs have, the questions are worded differently and confusing
who is here in 2024??
I ate my cat
@@najatsalim7505 ermm okay? lol
@@bubbleisamultistanI ate my horse
My dog ate me
Thanks thia helped me nice amazing
I still didn't get it
Like won't the speed cart bcz of the variation in the tangents length
I mean it depends on us where we mark .
I am still confused and have some questions.
This didn’t help, I’m really confused still
even now.....?
Grateful!
This helps I understand now
bro i’m so done i have a psychics major quiz tomorrow
This is worth 5 science lessons ong
How much long enough should the tangent be
I have the same question, did u find out tho
yes, the length of the tanjent can be drawn to infinity, meaning that u can draw the tangent small or big or medium, or however long u want it to be, because the graident will be the same, no matter how long the tangent is@@MsHustle247
Epic!
that is very good
God I'm never watching my local education channel again they take half an hour to explain the same point that you explained in five minutes. besides a single part of a lesson is like 2 hours. oh they are super boring. besides I can choose the point that I want to know super easily. may god bless this channel.
and please open a patreon so that people can donate to this channel.
Thank you
make more than ever
i meant it's so understanduble
THANK YOU
my teacher in school was bad at teachin physics. so i will only took the topic and study here
what does a square respresent?
It is like the different bits of the journey travelled.