certain force acting on 20 kg mass changes its velocity from 2 metre per second to 5 M per second calculate the work done by the force find the power generated if the time taking is 21 seconds
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work done = change in kinetic energy
so, W= 1/2 * 20 * (5-2)= 30J
so, W= 1/2 * 20 * (5-2)= 30J
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