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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

Easy
A

v, v, v, v

B

0, 2v, 3v, 4v

C

0, 0, 0, v

D

0, 0, 0, 0



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