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A riding ball of mass m strikes a rigid ...

A riding ball of mass `m` strikes a rigid wall at `60^(@)` and gets reflected without loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be.

A

`mv`

B

`2mv`

C

`mv//2`

D

`mv//3`

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The correct Answer is:
A
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