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Question

A perfectly elastic ball P1 of mass m moving with velocity v collides elastically with three exactly similar balls P2,P3,P4 lying on a smooth table as shown. Velocities of the four balls after the collision are


A

v,v,v,v

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B

0,2v,3v,4v

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C

0,0,0,v

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D

0,0,0,0

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