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A ball of mass 0.2 kg moves with a veloc...

A ball of mass 0.2 kg moves with a velocity of `20m//sec` and it stops in `0.1` sec , then the force on the ball is

Text Solution

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`Deltap=p_(2)-p_(1)="mv-mu"=0-(0.2xx20)=-4Ns,`
Average force `F=(p_(2)-p_(1))/(t)=(-4)/(0.1)=-40N`
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