Deriving the shortcut to solve elastic collision problems | Physics | Khan Academy
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- Опубликовано: 28 июл 2016
- In this video, David shows how to solve elastic problems the hard way. In other words, using conservation of momentum and conservation of kinetic energy, David substitutes one equation into the other and solves for the final velocities.
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cant believe how my basics got crystal clear, hands down the best lecturers ever they're, all over the internet. 6 years and more, thankyou!
This is beautiful!! :)
When ur physics professor wants to know “where u got this formula?” So you must derive it real quickly just to proceed to the real exam question.
Yeah but that gets pretty hard(atleast for me) when doing kinematics
Most physics textures have this formula as theory
Hands down the best video about elastic collisions!!!
Dang this channel needs more subs for the helpful content. Great and really helpful video!
Waw I am a physics tutor, and it really helps me to make it easy to my students. Thank you so much :)
I think this video just made me fall on love with physics :)
OMY!! THIS JUST HELPED ME UNDERSTAND PHYSICS!!
this is amazing
thanks
from all my heart
"Physics is just spicy math" -a meme
yup
Ok
beautiful, my textbook kept it expressed as a difference, even tho is was really similar this is much simpler to memorize, and actually more elegant to derive.
والله I love you man 😭❤️
Isn't Vgi is negative on the first equation of consvered momentum m why you put it pluse since its to left
this is amazing
oh my gosh that is so beautiful
Heyy is there a video where u solve inelastic collision problems?
if i take the last video: Vti = 40 Vtf =-34 Vgi=-50 and Vgf = 52 the result with your calcul is 6 = 2 ?????????? whats wrong?
omg
What if the masses are the same?
What I mean is the equations cancel
No, it doesn't matter what the masses are. The equations will not cancel. Remember to put directions as you plot the velocities into the equations aswell.
Something cool is gonna happen. The masses are gonna exchange speeds.
it was so slow and boring that i had to pass more than half of the video
I mean everbody cannot understand fast 🙂