A body of mass $2$ kg is moving on the ground comes to rest after some time. The coefficient of kinetic friction between the body and the ground is $0.2$. The retardation in the body is ...... $m/s^2$
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(d) We know that $a$ $ = \mu g = 0.2 \times 9.8 = 1.96\;m/{s^2}$
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