A body of mass m moving with velocity v collides head on with another body of mass 2m which is initially at rest. The ratio of K.E. of colliding body before and after collision will be
Text Solution
Verified by ExpertsThe correct answer is:
D
K.E. of colliding body before collision 
After collision its velocity becomes

∴ ∴ K.E. after collision

Ratio of kinetic energy = 
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