Body A of mass 4 m moving with speed u collides with another body B of mass 2 m at rest the collision is head on and elastic in nature. After the collision the fraction of energy lost by colliding body A is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
initial energy of B = zero
Final velocity of
M 1 = 4M u 1 = u
M 2 = 2M u 2 = 0
Fraction of energy lost 
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