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A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be

[A].	5 m/s	[B].	10 m/s
[C].	zero	[D].	2.5 m/s

Answer: Option A

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