ball ‘a’ of mass 250 g moving on a smooth horizontal table with a velocity o

Question

Ball ‘a’ of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball ‘b’ on the table. if the impact is perfectly elastic, the velocity of the ball ‘b’ just after impact would be

Options:

A . Zero

B . 5 m/sec

C . 10 m/sec

D . None of these

Answer: Option C

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