A Level Physics Revision: All of Work, Energy and Power (in 18 minutes)

Important: I missed out one definition from the video, that is:
The Watt - one Watt is defined as 1 Joule that has been transferred in 1 second.

This video is useful for all examboards including OCR A Level Physics, AQA A level Physics, Edexcel A Level Physics, CIE Cambridge International A Level Physics 9702 syllabus, Eduqas etc.

Chapters:
00:00 Intro
00:16 Work Done
02:22 Base Unit for Work Done
03:51 Conservation of Energy
05:08 Derivation of Potential Energy
07:44 Derivation of Kinetic Energy
10:56 Conversion of Potential to Kinetic Energy
12:39 Finding the resistive force
16:10 Power
17:27 Efficiency

[daniyalhussain]

Im revisiting for my mechanics resit in my foundation year and finding out how to get the Kinetic energy equation just took me.
Thats so bloody cool and I dont know why.

Thank you so much please keep doing what your doing

[dnishal]

hey i commented on your motion video earlier, well im on ocr spec a:
with your videos revisions been a i swear!. i can easily juggle in enough time for my other subjects which also require alot of time, im doing physics, maths, and computer science alevels.
i finished motion, forces in action, materials and today im doing laws of motion and momentum and work energy and power. i just wanna say without these videos i would have honestly gave up doing my revision, i would have known i was failing and i couldnt be asked.

but these are so damn helpful, thank you so much Zphysics

[williamedwards]

Wow this really helped me understand, thank you! Just starting to understand the basics for physics.

[marcoaltamura]

14:30, I think a more understandable way of writing it would be 1/2mv²-mgh=-Fx, since the angle between F and x is actually 180°, and the cosine of that angle is -1 (furthermore, we expected the work to be negative since it's a resistive force). It's obvious that writing it the same way you doesn't change anything, but isn't 100% clear. Good job with the video!

[Ansariz-y]

I have to say, U r just amazing
Thank you so much👊!

[vaithiesh.jjayasankar]

Thank you !!, it really helped me out!

[luddy]

Hi sir I know ive been asking so many questions on all your vids😂! but at 13:58 why do we do PE-KE wouldn't I be the other way round since KE is the final energy? I could be wrong but why is it that? thanks sir!

[mathsphysics]

Sir I am Indian English is note coming to me and you are very good explain to the derivation Love you sir ✍️✍️✍️❣️❣️❣️

[azilius]

Why did you subtract the P.E from the K.E at 16:

[jasperano]

Why does this legend sound so close to Joe from the Captain Joe yt

[thavaneshn]

What chapters of the text book do these cover