How Do You Express Kinetic Energy in Terms of Momentum?

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The discussion centers on expressing kinetic energy in terms of momentum, specifically the equation k = p^2 / (2m). A user struggles to prove that the fractional loss during a collision is equal to M/(m+M) and seeks assistance. Forum members emphasize the importance of showing work to receive help and request clarification on which part of the problem is causing confusion. Additionally, they remind the user to post homework questions in the appropriate forum for better guidance. Clear communication and adherence to forum rules are essential for effective problem-solving.
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I spent about over an hr for this problem and still can't figure it out.


expressing the kinetic energy in terms of momentum (k= 1/2^2mv=p^2/2m) prove using symbols not numbers that the fractional loss during the collision is equal to M/(m+M).
 
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harvoh126 said:
I spent about over an hr for this problem and still can't figure it out.


expressing the kinetic energy in terms of momentum (k= 1/2^2mv=p^2/2m) prove using symbols not numbers that the fractional loss during the collision is equal to M/(m+M).

This can't be the whole of the problem. What collision?
 
Please show some work, when you post homework problems. You must show some work in order to receive help according to the rules of the forum.

Where exactly in this problem are you getting stuck?

Also, please post homework problems in the Homework help forum.
 
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