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A smooth sphere ‘A’ of mass ‘m’ is moving with a constant speed ‘V’ on the smooth horizontal surface collides elastically with an identical sphere at ‘B’ at rest. After elastic collision speed of sphere ‘A’ is V/2 then the speed of sphere of ‘B’ is

a
V2
b
3V2
c
3V2
d
5V2

detailed solution

Correct option is C

The given elastic collision is oblique. Hence we apply conservation of K.E 12mV2=12m(V2)2+12m VB2 VB=3V2

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