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!
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.
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: th-cam.com/video/-4_rceVPVSY/w-d-xo.html Short Brian Cox clip: th-cam.com/video/E43-CfukEgs/w-d-xo.html
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
@@lucasdexter463 no, 'work done against air resistance' essentially describes the energy transferred to the object by a force in order to overcome air resistance
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 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
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
I love how you used Planet Coaster to explain real life physics.
Do it more.
MA NAME A CHEF same here!
YES
it hit me so out of left field seeing game graphics in an a level physics video
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!
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
never loved a science channel to this extent
_Buh steel's heavier than feathas_
It doesn't matter in a vacuum
You’re videos are so well explained and to the point. Appreciate the colourful pens too. Please keep it up 👍👏
He really knows his thing , good explanations
Bruh this whole time, it felt like Chris Hemsworth is teaching Physics.
loooool
imagine having this dude as a teacher
This is so good! I don't know why it only got a few likes.
It was really helpful.
Does an object moving with constant velocity have KE?
Yes because kinetic energy is 1/2 x mass x velocity squared so it would have KE
Yes because the formula is 0.5mv2
Good luck on Monday everyone
You too😂
Good luck mate!
can you do a video on power and energy efficiency. need this for the aqa course
thank you so much this helped me a lot!
how would you write GPE = KE if there was friction involved?
GPE = KE + work done by friction (Force of friction x distance)
Science Shorts why is work done negative in gravitational fields? Does negative work done mean something is gaining energy rather than losing it?
I actually love you so much!!!!!!!!
Could you do a video on moments and centre of mass for GCSE?
WOOWWW!! cool video. everything is connected :0
This video is so helpful - Thank you!
Thank you so much. You're saving my life❤❤❤❤❤👏👏👏👏👏
Tq so much your explanation really helps :)
Woah thanku soo much u made it so simple
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.
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: th-cam.com/video/-4_rceVPVSY/w-d-xo.html
Short Brian Cox clip: th-cam.com/video/E43-CfukEgs/w-d-xo.html
@@raiyanyt6618 Legend. Thank you x
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
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?
@@manan7513 no you're going from FORCE to WORK DONE, not from a small force to a larger force.
To find out work done down a slop without knowing the force, do you do GPE-KE?
In simple terms could you explain why work done results in waste heat please?
What is meant by "work done against air resistance?"
@@lucasdexter463 no, 'work done against air resistance' essentially describes the energy transferred to the object by a force in order to overcome air resistance
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?
Gravity is doing work 😊
@@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
i love these lectures and they help me a lot :)
but that a level looks like 4 level lol
thankss
Sir how can we find the loss in gravitational potential energy if it travels down the slope ?
Er, mgh
Wouldnt E be = to F^2cosø? Because d is Fcosø.
Cheers
I love you bro
Im slightly confused as i worked out 20x100cos(30) to be 308.5J not what you said not sure what im doing wrong
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
It’s because you’re using radians mode. Tap on you’re calculator shift>Mode>Deg (to turn it back to degree mode)
who also has a test tomorrow ?
Nah I got a test today, like my third alevel physics test in the year already
HELLLOOOOO MASTQG IN REALUY HAPPPPY
Wow
why are u cleaning the moon???
.
from pear; xxx
thanks for teaching me physics, but it is not 'is equals'. This is mind grating, just call it 'is equal'.
Old habit, Welshism. I kicked it not long after this vid.
@@ScienceShorts kk, thanks
That plane is the worst drawing ever 😂
Oi
@@ScienceShorts sorry lol
spaghetti isnt that good