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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

(a) 1 : 1 (b) 2 : 1

(c) 4 : 1 (d) 9 : 1

Answer: d

(8)

5/5 - (3 votes)

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