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COE in Elastic Collision

A particle P ...

Question

A particle P moving with speed 'v' undergoes a head-on elastic collision with another particle Q of identical mass and at rest. After the collision,

A

Both P and Q move forward with speed

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B

Both P and Q move forward with speed

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C

P comes to rest and Q moves forward with speed v

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D

P and Q move in opposite directions with speed

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Solution

The correct option is C
P comes to rest and Q moves forward with speed v

If two objects of equal masses collide head on elastically, then their velocities are exchanged.

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