Thermal energy from friction | Work and energy | Physics | Khan Academy

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Khan Academy Physics

Khan Academy Physics

8 жыл бұрын

In this video David shows how the area under a Force vs. position graph equals the work done by the force and solves some sample problems.
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Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
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Пікірлер: 35
@hookem3768
@hookem3768 3 жыл бұрын
11:12 ". . .this ramp has no friction, but Walter has no fear." That's moving.
@mitchynz
@mitchynz 2 жыл бұрын
this one blew my mind - I got instantly smarter in
@iban4849
@iban4849 5 жыл бұрын
Walter is a weird penguin he slides on his back
@candyyatliu9736
@candyyatliu9736 4 жыл бұрын
R3V 69 so you slide on ur belly?
@miniusss
@miniusss 4 жыл бұрын
@@candyyatliu9736 what do u slide on?
@8b-pruthvisandesh78
@8b-pruthvisandesh78 3 жыл бұрын
what is your problum
@nialcc
@nialcc 3 жыл бұрын
I thought the same thing. Penguins slide on their bellies.
@Ibrahimkhattak17
@Ibrahimkhattak17 4 ай бұрын
Why he slide on his back 😅😅😅😅😅
@rockleee9265
@rockleee9265 4 жыл бұрын
Awesome man Thanks for this video
@ananyalapalikar6604
@ananyalapalikar6604 5 жыл бұрын
that one dislike is from Walter who disagrees that he's bored in Antarctica
@miniusss
@miniusss 4 жыл бұрын
now its 4 dislikes! I bet Walter told his friends that the guy made fun of him by making him sliding on his back, they will form penguin army and soon all the penguins in the world will dislike, PeNgUiNs HaVe EnTeReD ThE ChAt
@WayneCXT99
@WayneCXT99 3 жыл бұрын
@@miniusss nope its WALTERS.... maybe even human who named walter and other living organism too
@miniusss
@miniusss 3 жыл бұрын
@@WayneCXT99 :O, thats a reasonable answer!
@bharathikv5488
@bharathikv5488 2 жыл бұрын
I loved this one ❤
@srijon599
@srijon599 5 жыл бұрын
Good video.
@user-jy9ro6qn2b
@user-jy9ro6qn2b 6 жыл бұрын
Thank you
@praveenraj5879
@praveenraj5879 2 жыл бұрын
Mind = Blown
@hookem3768
@hookem3768 3 жыл бұрын
Can you describe the thermal energy in terms of a type of Potential energy? Any time I see KE, I think of the conversion of KE to PE.
@Ibrahimkhattak17
@Ibrahimkhattak17 4 ай бұрын
This make my mind fresh he slide on back this is so funny
@12122012cristian
@12122012cristian 3 жыл бұрын
I propose a problem similar with four sub chapters : walter and friends at play : how fast walter must throw a snowball to be happens follow phenomenon 1. a snowball melt in flight / 2. a snowball vaporize in flight / 3. a snowball melt on impact with the target (fixed building wall) 4. a snowball vaporize on impact with the target (fixed immobile wall). the coefficient of friction with the air is u being constant and the atmospheric density r is also constant whole "secrete " of this problem is where put u (friction coefficient) in the equation Et = (mv ^ 2) + mgh ...
@mam_coaching
@mam_coaching Жыл бұрын
im not really sure of this but i guess in the final example u gave ; the angle of the incline platforme from where the walter slides metter too , because standing there means the the weight P ecuals mg * cos alpha which alpha is the angle of the incline platfome and h ecuals zero because he is standing on it
@koen8996
@koen8996 3 ай бұрын
i had the same question pro.
@Celicaw8
@Celicaw8 8 жыл бұрын
Penguins are smart :) Thanks for the video!
@anaytare3659
@anaytare3659 2 ай бұрын
Can you explain me thermal energy?
@zorxey3189
@zorxey3189 Ай бұрын
walter is my goat
@lebruhjames6420
@lebruhjames6420 5 жыл бұрын
Who came here to prove that you can cook a chicken by slapping it?
@Basic-Tron
@Basic-Tron 6 ай бұрын
Not me 🤣🤣...
@timjohnson2186
@timjohnson2186 11 ай бұрын
John 3:16
@lilywatts5383
@lilywatts5383 5 жыл бұрын
@Ibrahimkhattak17
@Ibrahimkhattak17 4 ай бұрын
What you right we can't see anything that you right
@pikabrofar5780
@pikabrofar5780 3 жыл бұрын
Are you watching this video because A: You searched it up B: The school made you watch it C: This showed it in your suggestion results
@kharavela9088
@kharavela9088 2 жыл бұрын
A.
@Basic-Tron
@Basic-Tron 6 ай бұрын
A as well
@helloretard728
@helloretard728 7 жыл бұрын
take a shot every time this guy says feathery coat~
@ynayna28
@ynayna28 5 жыл бұрын
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