A perfectly elastic ball P1 of mass m moving with velocity v collides elastically with three exactly similar balls lying on a smooth table. Velocities of the four balls after collisions are
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a
v, v ,v, v
b
0, 2v, 3v, 4v
c
0, 0, 0, v
d
0,0,0,0
answer is C.
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Detailed Solution
0, 0, 0, v velocity of ball 1 will be given finally to the fourth ball the remaining all balls comes to rest velocities are exchanged in every collision