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Displacement of COM:Application

If a ball of ...

Question

If a ball of mass 1 kg makes a head-on collision with a ball of an unknown mass initially at rest such that the ball rebounds to one third of its original speed, what is the mass of the other ball?

A

1 kg

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B

3 kg

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C

4 kg

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D

2 kg

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Solution

The correct option is D
2 kg

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