The funniest thing I remember in physics class in about year 9 or 10 is discussing these equations, specifically v^2 = u^2 + 2as then I say, "The ceiling is this high, so if I throw the pencil up at precisely this speed...." then I throw a pencil up in the air and it comes just shy of the ceiling by a tiny margin. Then my friends being wowed.
This is the best channel for physics ..On the youtube...thank you so much for making all your videos... so much respect from indian fan from India👌👌🔝🔝✌️👍👍💓🌷🔝
Hey, Amazing video. I loved it how u simplify the understanding. Just wanted to let you know that 11:22 the the time should be 1.25 seconds not 1.22 seconds
so the motion for gravity is always downwards and anything that opposites that would have an acceleration on -9.8, but if we have a ball that dropped downwards the acceleration is going to be 9.8ms^-2 because it's going in the motion of gravity?
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yes it would be. You would use the formular s=1/2at^2+ut tho instead Substituting it in would be 0=-4.9t^2+6t and you would get the same answer for t as he did :) without using the -6ms^-1 for the v
I think you mean u = 6 but when you substitute it into the equation it becomes -6. Taking the final velocity as 0 then x2 is the same as taking the final velocity as -6. But when you take the final velocity to be zero, you are calculating the maximum height of the ball when you throw it, multiplying by 2 would give you the total DISTANCE and not the DISPLACEMENT (which Suvat works with). it would make sense if the ball was thrown up and it stayed floating somehow, but since it returned to its original position the displacement is 0. However for this problem it doesn't matter since you aren't asked to work out S, but its helpful to know anyway I think.
I understand the equations; I know them all off by heart, but I just cannot apply it to exam questions for the life in me. Any advice? I'm an A level maths student and I'm frustrated that I cannot apply it right.
For the final example about the ball being thrown up. Would v not be 0? Since it's returning to the same point the displacement would be 0, this means the velocity would be 0? Tell me if i'm being stupid :)
Hey, V is equal to zero when it reaches the highest peak. Since the ball comes back to his hand, it would actually be S (the displacement) that would be equal to zero. You can solve this problem if you use the s,u,a and t (whilst searching for t) instead of v like he did in the video and it would still give you the same answer. Hope this helped but if I've confused you, feel free to tell me
Also, I just noticed that you understood that s is equal to zero so if you're searching for v, use the s,v, a and u equation. When solving for v, it will give you 6 m/s (V^2=u^2 + 0 since 2*9.8*0=0) but remember that it is going the opposite direction so it is -6 m/s.
Hey, I have a question. For the ‘throwing’ up example, we didn’t know the displacement right? But when an object falls back to the same point isn’t the displacement zero? So isn’t it possible to use the other equations too? I tried it and I’m getting zero 😭🤧
Speed and velocity both describe how fast an object is moving, but velocity also gives what direction this is in. If you say "the velocity is 5m/s", you must also say "to the right" for example. BUT if you see "the speed is 10m/s horizontally", this is actually a velocity because you have both speed and direction! See th-cam.com/video/n58kAPcxNwc/w-d-xo.html for more help :)
Hi, I have a question. A girl is standing on a bridge and throws a coin with a vertical velocity of 5 ms^-1. It hits the water below the bridge after 1.5 seconds. Assuming that the effects of air resistance are negligible, what was the initial height of the coin above the water?
At the start I was so confused thinking what the hell is suvat thinking have my teachers taught me something completely random but then I realised it was literally uvast(what I was taught )rearranged. Great start. 🤦
@@ScienceShorts I don't know😅 that's what I was taught. Got a physics mock tomorrow so go over some stuff last minute. Sort of freaking out because there's a couple equations I keep forgetting. I hope it goes alright because i want to take physics for a level. Your videos are really useful so thank you 👍
You know it's good when they whip out diagrams in sharpies
teacher teaches in school: *CONFUSION*
youtube teacher: *YES*
“You’re always going to get these equations on the exam”
*Press X to Doubt*
Nowadays?
In As we do get 2 of the equations on the first few pages, but all 4 are not there(at least not in this year)
@@Shahaan yes they are?? They’re literally on the data sheet
The car accelerated so quickly it became a tortoise shell!
why didnt my teacher just say this instead wtf
The sound of the Sharpie on the paper, ASMR at its best 😍
Such a clear explanation! Can’t thank you enough! 😀
This was incredibly clear and not confusing thank you so much!!!!!!
I came here last year and now i came this year i will also come next year for my boards:)
yep i came here for boards just like i said:)
paper 1 a level tomorrow, and thanks to this legend I ain't gonna flop
How was the test?
@@water9840 probably didn't happen because of the pandemic i am guessing
good luck in hindsight!
@@water9840 Sorry for replying 2 years late but it actually went pretty well and now I'm in 3rd year of uni studying architecture :)
@@richasocool Covid started about 6 months after I did my exams, it was the year after me that didn't do them
omg thank you so much . have a physics test tomorrow and i feel much better now . thank youuuuuuuuuuuuuuuuuuuuuu
Mai Ger Gnav how was the test?
@@hi44098 We shall never find out
@@Bond007Jr hahaha . truee
Thanks so much for your work, is greatly appreciated! You just got a new sub
Thank you so much,the video was very much informative and understandable. Could you please make a video on "Dynamics" ? (Alevel)
The funniest thing I remember in physics class in about year 9 or 10 is discussing these equations, specifically v^2 = u^2 + 2as then I say, "The ceiling is this high, so if I throw the pencil up at precisely this speed...." then I throw a pencil up in the air and it comes just shy of the ceiling by a tiny margin. Then my friends being wowed.
One of the best videos I've seen in a long time nice work mate : )
My fav channel
4:55 the car looks like a dude wearing sunglasses and a winter hat.
That is something
That can never be unseen.
oh ye haha
Hahaha oh yea
Thank you. This video was extremely helpful! Great work.
This is the best channel for physics ..On the youtube...thank you so much for making all your videos... so much respect from indian fan from India👌👌🔝🔝✌️👍👍💓🌷🔝
Hey, Amazing video. I loved it how u simplify the understanding. Just wanted to let you know that 11:22 the the time should be 1.25 seconds not 1.22 seconds
It's 1.22 seconds
Thank you for you help, greatly appreciated Sir!
Thank u very much for this video, it helped a lot on how to solve the problems and a easier way to solve them... thank u very much!
your a better teacher than my teacher at school i swear
You’re a genius!! Thank you
hope u get more likes great video and great stuff helped me out a lot
Respect Science Shorts
thank you! this was immensely helpful.
7:15 when he said; falling, So you have a plane. my mind went dark XD
Thx for the video very helpfull
Took me second to realise what it meant.... 👁👄👁
I wish i had more thumbs to give you more thumbs up. Thank you to the power of 10
Great Explanation
Thanks Alot
so the motion for gravity is always downwards and anything that opposites that would have an acceleration on -9.8, but if we have a ball that dropped downwards the acceleration is going to be 9.8ms^-2 because it's going in the motion of gravity?
Hi, great video, but I think you missed one equation. S = vt- 1/2(at^2)
These helped me to memories SUVAT:
View ugly and amazing teapots
See ugly teapots and have a tea too
To all schools and you too, visit today
To see us, and view teapots
explain?
@@sukhysingh7776 the first letter of each words, have =half, and = +.
v=ut+1/2at2
Omg what a lifesaver thank u so much
For 'throwing up', would s=0 as the ball has not moved overall? (started in hand and ended it hand). Thank you!
yes it would be.
You would use the formular s=1/2at^2+ut tho instead
Substituting it in would be 0=-4.9t^2+6t
and you would get the same answer for t as he did :) without using the -6ms^-1 for the v
@ScienceShorts for the 'falling' example, do you note 9.8ms-2 as the acceleration because you have assumed that the positive velocity is downwards?
Yes, I chose it as downwards.
thank you but I think some thing wrong in the last example.
u=-6
but v has to be zero
and then multiply the answer by 2
If you say so!
I noticed that too,now the question is whether the ball came to rest at the hand so that the final velocity became zero?
I think you mean u = 6 but when you substitute it into the equation it becomes -6. Taking the final velocity as 0 then x2 is the same as taking the final velocity as -6. But when you take the final velocity to be zero, you are calculating the maximum height of the ball when you throw it, multiplying by 2 would give you the total DISTANCE and not the DISPLACEMENT (which Suvat works with). it would make sense if the ball was thrown up and it stayed floating somehow, but since it returned to its original position the displacement is 0. However for this problem it doesn't matter since you aren't asked to work out S, but its helpful to know anyway I think.
Excellent 🎉
What if you were told the ball was thrown up and hit the ground 1m below the hand? Would “s” be -1 and substitute that into a formula?
Rn im in o level(10th year) , and i was curious about a level physics, and i understood most of this
clearly presented. thanks
At 8:40, shouldn't the displacement be negative because it's falling down? I'm very confused, each video I watch says something different sksks
the positive direction is downward, it makes the equation much easier to answer as there is no negative numbers.
idk how to thank you enough!
Thank you. This was a great video.
Thank you!!
Thankyou very helpful
The video is easy to understand and awesome
Also, isnt there another one, s= vt-1/2at^2?
That one is derived from the others
great video that helped me study! thank you
Best video. thankyou so much
Very useful
thnq so much .. so useful. 😊
thank you. really helpful
Hi. Great video, on the falling out of the plane scenario, should gravity be a minus as he's falling?
+Daniel Keefe Not unless you want displacement to be negative too!
you helped me so much thank you
disagree about falling plane problem. the plane is has initial velocity!!! pls correct me if i am wrong!
What is the plane's vertical velocity?
So what are all the other ones, like a=-(u²/2s) and a=(v²-u²)/2s ??????
They're just from rearranging v2=u2+2as!
Science Shorts thanks
thank you so much sir!
Genius!!!
Amazing video. thanks
These school teachers make stuff look so complicated. I thought I was extra dumb
Why is the final velocity -6 instead of 0? It’s at rest when it reaches my hand isn’t it?
Dude.
WHEN it reaches your hand, it's still moving. AFTER it hits your hand, it's slowed down to 0.
@@ScienceShorts got it, thanks. Really appreciate your work, sir.
Acceleration is Vector hence it would be -9.81 or just -10ms2
Yeah? So I'm wrong?
@@ScienceShorts Hmm not really. If the ball is thrown up the acceleration would be -10 and if it is thrown down its positive
7 minutes in why could s = (u + v) \2 t not be done first then find acceleration with v2 = u2 + 2as.
the best things about this video are the cars
a nice im gonna pass now
Holy crap thanks so much
thank you sir!
I understand the equations; I know them all off by heart, but I just cannot apply it to exam questions for the life in me. Any advice? I'm an A level maths student and I'm frustrated that I cannot apply it right.
Red Fire Don't worry just keep trying m8
How do we know when the acceleration is 9.81 or -9.81
For the final example about the ball being thrown up. Would v not be 0? Since it's returning to the same point the displacement would be 0, this means the velocity would be 0? Tell me if i'm being stupid :)
Hey, V is equal to zero when it reaches the highest peak. Since the ball comes back to his hand, it would actually be S (the displacement) that would be equal to zero. You can solve this problem if you use the s,u,a and t (whilst searching for t) instead of v like he did in the video and it would still give you the same answer. Hope this helped but if I've confused you, feel free to tell me
Also, I just noticed that you understood that s is equal to zero so if you're searching for v, use the s,v, a and u equation. When solving for v, it will give you 6 m/s (V^2=u^2 + 0 since 2*9.8*0=0) but remember that it is going the opposite direction so it is -6 m/s.
@@juliak9899 Ohh, i understand now. Thank you so much :)
thanks
can you please do exam questions based on each topic
WHY DOESNF HE HAVE MORE SUBS!!
Thank you
8:00 how did you know that it was 30 seconds or did you just make that number up?
He made the number up
Mechanics EDEXCEL is a disaster help please !! anyone guys ..
Im doing same
If you don't find it interesting maybe this is not the subject for you, follow your heart.
thank you very much have physics test
thank you
What about an equation that has U missing?
Anonymous S=vt-1/2at^2
However this is for maths as unless v=0 a quadratic equation may form if asked to find t
Nice dialogues ♥️♥️♥️✅✅
Hey, I have a question. For the ‘throwing’ up example, we didn’t know the displacement right? But when an object falls back to the same point isn’t the displacement zero? So isn’t it possible to use the other equations too? I tried it and I’m getting zero 😭🤧
Easier to solve if you split it in half - just do from bottom to apex.
@@ScienceShorts Mhm, Thankyou
can you change the marker pls
Nice love the video
Thank u alot
Is "s" also 0 in the last example?
Thankuuuuuuu🤩🤩🤩🤩
Hey s this playlist a level physics made easy for aqa?
Would he not be falling at -9.81ms^-2? Hes falling in the downwards direction
+DillondavoBMX Sure, if I said his velocity was negative. Which directions you choose positive and negative to be is arbitrary.
Soo are speed and velocity interchangeable?
Speed and velocity both describe how fast an object is moving, but velocity also gives what direction this is in. If you say "the velocity is 5m/s", you must also say "to the right" for example. BUT if you see "the speed is 10m/s horizontally", this is actually a velocity because you have both speed and direction! See th-cam.com/video/n58kAPcxNwc/w-d-xo.html for more help :)
ScienceShorts ahh that makes so much sense! Thanks so much! :)
Thank you very much you are awesome you earned a sub from me
No, velocity includes direction, speed doesn't.
at 8:10 you remove U and t, why can you remove that t and keep the other and not have both of them?
Because u=0, ut=0!
what does the S mean u said its displacement but what do you mean by that? thanks for vid btw
+Matin Hussain Displacement is distance with a direction! 10m east vs 10m west: same distance, different displacement.
Do you have practice worksheets which are very similar to the questions that u did in the examples
+Farrukh Karimov TES is your friends.
Science Shorts could you please link the site, sorry
Surely when you throw a ball in the air the initial velocity is 0 m/s because its in your hand?
Do you take physics classes
Thank yu pro
Hi, I have a question. A girl is standing on a bridge and throws a coin with a vertical velocity of 5 ms^-1. It hits the water below the bridge after 1.5 seconds. Assuming that the effects of air resistance are negligible, what was the initial height of the coin above the water?
Taylor Shill he has a video on projectiles! Try watching that as it will take Into account vertical velocity and horizontal velocity
But I think it’s 7.5m as distance is speed x time so 5 x 1.5 which is 7.5
Tom Andrews the actual answer is 3.5m
Taylor Shill no it’s not? If you include the effect of gravity I got 18m and without I got 7.5m? Would like to see how you got that answer
Tom Andrews it’s from the mark scheme, I’m also not getting 3.5m that’s why I’m asking
At the start I was so confused thinking what the hell is suvat thinking have my teachers taught me something completely random but then I realised it was literally uvast(what I was taught )rearranged. Great start. 🤦
UVAST?! Are you kidding me?! 😆
@@ScienceShorts I don't know😅 that's what I was taught. Got a physics mock tomorrow so go over some stuff last minute. Sort of freaking out because there's a couple equations I keep forgetting. I hope it goes alright because i want to take physics for a level. Your videos are really useful so thank you 👍
@@georgiaevans2123 did you? How are you doing? What are you majoring in?
7:47 shouldn't it be "-9.81ms^-2"??
no, the person is falling down, in the direction of gravity.
nice...................