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A ball reaches a racket at 60m//s along ...

A ball reaches a racket at `60m//s` along +X direction and leaves the racket in the opposite direction with the same speed. Assuming that the mass of the ball as `50gm` and the contact time is `0.02` second the force exerted by the racket on the ball is .

A

300 N along + X direction

B

300 N along -X direction

C

300 kN along +X direction

D

300 kN along - X direction

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The correct Answer is:
B
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