Work Energy And Power Question 244

Question: A body falls freely under gravity. Its velocity is v when it has lost potential energy equal to U. What is the mass of the body?

Options:

A) $ {U^{2}}/v^{2} $

B) $ 2{U^{2}}/v^{2} $

C) $ 2U/v^{2} $

D) $ U/v^{2} $

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ U=( 1/2 )Mv^{2} $



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