A body of mass 10 kg is raised from the certain depth. By the time it is raised by 10m, if its velocity is 2m/s, work done during this time is
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the work done is due to its kinetic energy
so W=KE=1/2 mv^2
=1/2*10*4
KE=20J
so W=KE=1/2 mv^2
=1/2*10*4
KE=20J
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