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Elasticity

A billiard ba...

Question

A billiard ball moving with a speed of $5 m / s$ collides with an identical ball originally at rest. If the first ball stops after collision then the second ball will move forward with a speed

A

10 m / s

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B

5 m / s

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C

2.5 m / s

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D

1 m / s

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Solution

The correct option is B $5 m / s$
In elastic head collision velocities get interchanged.

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