SUVAT - Newton's Equations of Motion - GCSE & A-level Physics (full version)

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Projectile motion/2D suvat: • Projectile Motion & SU...
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00:00 SUVAT variables
03:04 Equations of motion
07:03 Example: falling
08:48 Example: thrown upwards -
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[@imstillapieceofgarbage7032]

You know it's good when they whip out diagrams in sharpies

[@_dylanzz]

teacher teaches in school: *CONFUSION* youtube teacher: *YES*

[@stxrdvsk]

“You’re always going to get these equations on the exam” *Press X to Doubt*

[@yondabigman4668]

Nowadays?

[@Shahaan]

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)

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@@Shahaan yes they are?? They’re literally on the data sheet

[@ryantbwarren]

The car accelerated so quickly it became a tortoise shell!

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why didnt my teacher just say this instead wtf

[@hb3549]

The sound of the Sharpie on the paper, ASMR at its best 😍

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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!

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@@water9840 probably didn't happen because of the pandemic i am guessing

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@@water9840 Sorry for replying 2 years late but it actually went pretty well and now I'm in 3rd year of uni studying architecture :)

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@@richa9076 Covid started about 6 months after I did my exams, it was the year after me that didn't do them

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4:55 the car looks like a dude wearing sunglasses and a winter hat.

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[@ChanduChandu-ut8he]

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[@samkkamau2770]

The video is easy to understand and awesome

[@mannytalwar3095]

@ScienceShorts for the 'falling' example, do you note 9.8ms-2 as the acceleration because you have assumed that the positive velocity is downwards?

[@ScienceShorts]

Yes, I chose it as downwards.

[@emmacole2296]

For 'throwing up', would s=0 as the ball has not moved overall? (started in hand and ended it hand). Thank you!

[@arianas7866]

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

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Hey s this playlist a level physics made easy for aqa?

[@JohnDoe-gb6co]

thank you sir!

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[@user-ov4ig5ex2w]

Very useful

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Respect Science Shorts

[@farrukhkarimov4295]

Do you have practice worksheets which are very similar to the questions that u did in the examples

[@ScienceShorts]

+Farrukh Karimov TES is your friends.

[@farrukhkarimov4295]

Science Shorts could you please link the site, sorry

[@Mar_bic]

Nice love the video

[@lolaxmed9046]

can you please do exam questions based on each topic

[@sophiaredwall5879]

Genius!!!

[@soorajscousik]

Hi, great video, but I think you missed one equation. S = vt- 1/2(at^2)

[@mikehuisman5833]

7:15 when he said; falling, So you have a plane. my mind went dark XD Thx for the video very helpfull

[@djfish3099]

Took me second to realise what it meant.... 👁👄👁

[@jdjgg9398]

Thank you

[@studywithyan697]

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

[@sukhysingh7776]

explain?

[@studywithyan697]

@@sukhysingh7776 the first letter of each words, have =half, and = +. v=ut+1/2at2

[@Slynell1]

thank you

[@ayyanmusa2009]

Rn im in o level(10th year) , and i was curious about a level physics, and i understood most of this

[@danielkeefe3149]

Hi. Great video, on the falling out of the plane scenario, should gravity be a minus as he's falling?

[@ScienceShorts]

+Daniel Keefe Not unless you want displacement to be negative too!

[@muslimsahalibrahim5893]

Thank u alot

[@malakawadalla9635]

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

[@l3w1sk1ng9]

the positive direction is downward, it makes the equation much easier to answer as there is no negative numbers.

[@tawananyashadouglas4075]

thank you very much have physics test

[@timmyg72]

Is "s" also 0 in the last example?

[@lakshlalwani175]

How do we know when the acceleration is 9.81 or -9.81

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Nice dialogues ♥️♥️♥️✅✅

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[@thewelder-ee8uj]

thanks

[@matinhussain3131]

what does the S mean u said its displacement but what do you mean by that? thanks for vid btw

[@ScienceShorts]

+Matin Hussain Displacement is distance with a direction! 10m east vs 10m west: same distance, different displacement.

[@ishanpujari2171]

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

[@ahmed_4294]

It's 1.22 seconds

[@shumiathumthum5173]

I wish i had more thumbs to give you more thumbs up. Thank you to the power of 10

[@user-hc2wz9jb7i]

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 :)

[@juliak9899]

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

[@juliak9899]

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.

[@user-hc2wz9jb7i]

@@juliak9899 Ohh, i understand now. Thank you so much :)

[@kurosakiichigo1612]

can you change the marker pls

[@lakshlalwani175]

Do you take physics classes

[@mushfiqurrahmanalif5593]

Why is the final velocity -6 instead of 0? It’s at rest when it reaches my hand isn’t it?

[@ScienceShorts]

Dude. WHEN it reaches your hand, it's still moving. AFTER it hits your hand, it's slowed down to 0.

[@mushfiqurrahmanalif5593]

@@ScienceShorts got it, thanks. Really appreciate your work, sir.

[@FruitArtzFXDesigner]

a nice im gonna pass now

[@electricwire464]

thank you but I think some thing wrong in the last example. u=-6 but v has to be zero

[@electricwire464]

and then multiply the answer by 2

[@ScienceShorts]

If you say so!

[@clashofkings3139]

I noticed that too,now the question is whether the ball came to rest at the hand so that the final velocity became zero?

[@gravnine]

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.

[@djrkm9281]

Acceleration is Vector hence it would be -9.81 or just -10ms2

[@ScienceShorts]

Yeah? So I'm wrong?

[@djrkm9281]

​@@ScienceShorts Hmm not really. If the ball is thrown up the acceleration would be -10 and if it is thrown down its positive

[@shucaybcismaanibraahimxabi3610]

Thank yu pro

[@hibawazeer6342]

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 😭🤧

[@ScienceShorts]

Easier to solve if you split it in half - just do from bottom to apex.

[@hibawazeer6342]

@@ScienceShorts Mhm, Thankyou

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the best things about this video are the cars

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[@dillondavis6255]

Would he not be falling at -9.81ms^-2? Hes falling in the downwards direction

[@ScienceShorts]

+DillondavoBMX Sure, if I said his velocity was negative. Which directions you choose positive and negative to be is arbitrary.

[@JJFHNREHJEDK]

So what are all the other ones, like a=-(u²/2s) and a=(v²-u²)/2s ??????

[@ScienceShorts]

They're just from rearranging v2=u2+2as!

[@JJFHNREHJEDK]

Science Shorts thanks

[@timmyg72]

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?

[@user-ji9sm9gd5z]

disagree about falling plane problem. the plane is has initial velocity!!! pls correct me if i am wrong!

[@ScienceShorts]

What is the plane's vertical velocity?

[@DavidK-hp6yn]

7 minutes in why could s = (u + v) \2 t not be done first then find acceleration with v2 = u2 + 2as.

[@hb3549]

Also, isnt there another one, s= vt-1/2at^2?

[@VeritasEtAequitas]

That one is derived from the others

[@ArmyBTS-og3hu]

These school teachers make stuff look so complicated. I thought I was extra dumb

[@ASLUHLUHCE]

What about an equation that has U missing?

[@Suraj-so3ge]

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

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Mechanics EDEXCEL is a disaster help please !! anyone guys ..

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Im doing same

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If you don't find it interesting maybe this is not the subject for you, follow your heart.

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WHY DOESNF HE HAVE MORE SUBS!!

[@PZooni]

7:47 shouldn't it be "-9.81ms^-2"??

[@haithamalharthy2852]

no, the person is falling down, in the direction of gravity.

[@MrSigmaer]

at 8:10 you remove U and t, why can you remove that t and keep the other and not have both of them?

[@ScienceShorts]

Because u=0, ut=0!

[@camilleboudville3043]

Soo are speed and velocity interchangeable?

[@ScienceShorts]

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 kzbin.info/www/bejne/pGabnHSGmN2BrcU for more help :)

[@camilleboudville3043]

ScienceShorts ahh that makes so much sense! Thanks so much! :)

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[@intellectualize6354]

No, velocity includes direction, speed doesn't.

[@oskarwitha_k8258]

8:00 how did you know that it was 30 seconds or did you just make that number up?

[@gabriellita7236]

He made the number up

[@redfire4199]

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.

[@abdirahimmussa2708]

Red Fire Don't worry just keep trying m8

[@chaoscal7399]

Would anyone mind telling me why it is ^-1 in ms^-1

[@ScienceShorts]

+ChaosCal Anything multiplied to a minus power is the same as dividing by the positive power. So ms^-1 is the same as m/s.

[@chaoscal7399]

Ahh ok thanks, I have never been told why so its good to finally know XD

[@georgiaevans2123]

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]

UVAST?! Are you kidding me?! 😆

[@georgiaevans2123]

@@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 👍

[@zerere_]

​@@georgiaevans2123 did you? How are you doing? What are you majoring in?

[@jacksonquinn1472]

The car drives so fast it deforms!

[@shyamkanjee6409]

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?

[@jesse2436]

s = vt - 1/2at^2?

[@JivanPal]

Substitute v = u + at (equivalently, u = v - at) into s = (u+v)t/2, thus s = (v - at + v) t / 2 = (2v - at) t / 2 = vt - at²/2. So yes, that is true.