A ball of mass 2 kg moving with 4 m/s co...

A ball of mass 2 kg moving with 4 m/s collides elastically with a stationary ball. If it continues to move in original direction with 1/4th of its original velocity. Find velocity of centre of mass of system

3 m/s

2/5 m/s

5/2 m/s

2 m/s

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B

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