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A ball of mass 0.5 kg moving with a velo...

A ball of mass `0.5 kg` moving with a velocity of `2 m//s` strikes a wall normally and bounces back with the same speed . If the time of contact between the ball and the wall is 1 millisecond , the average force exerted by the wall on the ball is

A

2000 newton

B

1000 newton

C

5000 newton

D

125 newton

Text Solution

Verified by Experts

The correct Answer is:
A
`F=(mv-(-mv))/(t)=(2mv)/(t)=(2xx0.5xx2)/(10^(-3))=2xx10^(3)N`
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