Work done, Kinetic energy & GPE - GCSE & A-level Physics (full version)

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00:00 Work done
03:00 Power developed P=Fv
03:49 GPE - gravitational potential energy
04:43 Kinetic energy -
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Пікірлер: 67

@callumlangley6717 7 жыл бұрын

I love how you used Planet Coaster to explain real life physics. Do it more.

@tinadop7242 7 жыл бұрын

MA NAME A CHEF same here!

@laibawahab2062 3 жыл бұрын

YES

@riley2476 11 ай бұрын

it hit me so out of left field seeing game graphics in an a level physics video

@hrperformance 5 жыл бұрын

I'm working my way through the A level playlist and literally every video has been so so good. I don't think I've learned physics at this rate before. The guy is a geneous at teaching physics...even my dad was learning! XD I'm gonna buy some shirts!

@hlomphoprincess3573 5 жыл бұрын

never loved a science channel to this extent

@williamarmstrong6327 3 жыл бұрын

Hi, I really like the content. Could you maybe include one exam question in your videos and explain how to approach it as well. Thank you

@ChapCanai 5 жыл бұрын

_Buh steel's heavier than feathas_

@MuhammadUsman-ei4wi 2 жыл бұрын

It doesn't matter in a vacuum

@yasmine4501 5 жыл бұрын

You’re videos are so well explained and to the point. Appreciate the colourful pens too. Please keep it up 👍👏

@wisdomnemashapa1303 3 жыл бұрын

He really knows his thing , good explanations

@tabishkhurram2346 3 жыл бұрын

Bruh this whole time, it felt like Chris Hemsworth is teaching Physics.

@hayfordsarfo6623 3 жыл бұрын

loooool

@sakz6064 Жыл бұрын

This video is so helpful - Thank you!

@codeshala7304 2 жыл бұрын

thank you so much this helped me a lot!

@gloriabassey6406 4 жыл бұрын

I actually love you so much!!!!!!!!

@trajectory1483 2 жыл бұрын

imagine having this dude as a teacher

@norahzidyana508 3 жыл бұрын

Thank you so much. You're saving my life❤❤❤❤❤👏👏👏👏👏

@Ron-ls6ob 4 жыл бұрын

Tq so much your explanation really helps :)

@guojiaying5770 4 жыл бұрын

This is so good! I don't know why it only got a few likes.

@haziehigh3694 4 жыл бұрын

Woah thanku soo much u made it so simple

@sophieskates5410 5 жыл бұрын

can you do a video on power and energy efficiency. need this for the aqa course

@magn8195 7 жыл бұрын

Could you do a video on moments and centre of mass for GCSE?

@Vipa567 6 жыл бұрын

To find out work done down a slop without knowing the force, do you do GPE-KE?

@betul-ev2fu 3 жыл бұрын

thankss

@Nabila-rf2zs 4 жыл бұрын

It was really helpful. Does an object moving with constant velocity have KE?

@BE-sh9nt 3 жыл бұрын

Yes because kinetic energy is 1/2 x mass x velocity squared so it would have KE

@alandingleton6975 Жыл бұрын

Yes because the formula is 0.5mv2

@TheComplicationGame 5 жыл бұрын

Good luck on Monday everyone

@vincenzourso6685 5 жыл бұрын

You too😂

@hrperformance 5 жыл бұрын

Good luck mate!

@h.i.t.w7071 6 жыл бұрын

Can you please elaborate more about the feather reaches the terminal velocity only there is no air resistance force? I’m a little bit confused about that.

@raiyanyt6618 4 жыл бұрын

You probably finished your A-level but for anyone else reading. When two objects are dropped in a vacuum(no air resistance), they're masses are independent(does not affect the speed of the drop) and the two object are only subject to gravity. They will only have the gravitational force of the planet acting on them, therefore they fall at the same speed at the same time. Galileo tested this out 400 years ago where he dropped two different masses from the top of the tower of piza and they both landed at the same time. Tested on the moon: kzfaq.info/get/bejne/Y5qPpcaWu7a6g40.html Short Brian Cox clip: kzfaq.info/get/bejne/e5pjYKaX2tGpl6c.html

@Axashx 4 жыл бұрын

@@raiyanyt6618 Legend. Thank you x

@rapfarsibaza 3 жыл бұрын

Cheers

@matteo5399 5 жыл бұрын

how would you write GPE = KE if there was friction involved?

@ScienceShorts 5 жыл бұрын

GPE = KE + work done by friction (Force of friction x distance)

@pagmanproductions1686 4 жыл бұрын

Science Shorts why is work done negative in gravitational fields? Does negative work done mean something is gaining energy rather than losing it?

@binyameenniyaz7377 4 жыл бұрын

I love you bro

@reecelawson4718 3 жыл бұрын

In simple terms could you explain why work done results in waste heat please?

@chessbaseyay3724 2 жыл бұрын

i love these lectures and they help me a lot :) but that a level looks like 4 level lol

@sunnykim2134 5 жыл бұрын

Thanks for the great video, but im confused in the first part. It is written that the work done is 20x100xcos30, but isn't it actually 20/cos30 x 20?? Im so confused

@manan7513 5 жыл бұрын

That’s what I’m wondering because you’re going from a smaller force to a larger one so surely you divide by cosX no?

@subita7835 4 жыл бұрын

@@manan7513 no you're going from FORCE to WORK DONE, not from a small force to a larger force.

@mimsmith53 4 жыл бұрын

Im slightly confused as i worked out 20x100cos(30) to be 308.5J not what you said not sure what im doing wrong

@Grace-km1pz Жыл бұрын

this can't be right even without the cos(30) if you think about it : 20 x100=2000, I just checked on my calculator and i got 1732. maybe just make sure you are writing it in correct

@m91x81 Жыл бұрын

It’s because you’re using radians mode. Tap on you’re calculator shift>Mode>Deg (to turn it back to degree mode)

@beyza-dy2gp 3 жыл бұрын

When the roller coaster reaches the bottom and all the potential energy iş converted into kinetic energy, is there a work done or since the total energy(mekanic energy) doesnt change there isnt any work done?

@ScienceShorts 3 жыл бұрын

Gravity is doing work 😊

@beyza-dy2gp 3 жыл бұрын

@@ScienceShorts but isnt work the change in energy? if we consider the roller coaster frictionless there is no energy lost therefore the mechanic energy doesnt change. Could you please explain this Im confused

@winterbear7195 9 ай бұрын

Sir how can we find the loss in gravitational potential energy if it travels down the slope ?

@ScienceShorts 9 ай бұрын

Er, mgh

@disuqihijazi1524 5 жыл бұрын

Wouldnt E be = to F^2cosø? Because d is Fcosø.

@mominwaraich8156 6 жыл бұрын

What is meant by "work done against air resistance?"

@terryjohnson4653 5 жыл бұрын

@@lucasdexter463 no, 'work done against air resistance' essentially describes the energy transferred to the object by a force in order to overcome air resistance