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Choose the correct options A ball of ma...

Choose the correct options
A ball of mass 250 g moving with 20 `m//s` strikes a vertical wall and rebounds along the same line with a velocity of 15 `m//s`. If the time of contact is 0.1 s, the force exerted by the wall on the ball is

A

`87.5" N"`

B

`12.5" N"`

C

`-12.5" N"`

D

`-87.5" N"`

Text Solution

Verified by Experts

The correct Answer is:
D
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