Q20 A body of mass 0.5 kg travels in a straight line with velocity where. What is the work done by the net force during its displacement from x = 0 to x = 2 m ?
The relation between work done and the kinetic energy is given by :
Using the relation we can write :
Initial velocity = 0 (at x = 0 )
And the final velocity = (at x = 2).
Thus work done is :
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