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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

2000N

B

1000N

C

5000N

D

125N

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `F_("av")=ma_("av")=m(Deltav)/(Deltat)=(0.5[2-(-2)])/(10^(-3))=200N`
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DC PANDEY-LAWS OF MOTION-Check point 5.1
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  13. A ball of mass 0.5 kg moving with a velocity of 2 m//s strikes a wall ...

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