A body of mass \( 2 \mathrm{~kg} \) is resting on rough horizontal surface. A force of \( 20 \ma...

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A body of mass \( 2 \mathrm{~kg} \) is resting on rough horizontal surface. A force of \( 20 \mathrm{~N} \) is applied to it for \( 10 \mathrm{~s} \) parallel to the surface. If coefficient of kinetic friction between the surfaces in contact is \( 0.2 \).
Calculate
change in \( \mathrm{KE} \) of object in \( 10 \mathrm{~s} \).
Take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \).
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