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} $
