Question

4 A body of mass 0.5 kg travels in a straight line with velocity v = ar5/2 where a = 5 in SI unit What is the work done by the net force during its displacement from x = 0 to x = 2 m? ​

Answer 1

Explanation:

Mass of the body, m=0.5kgInitial velocity, u (at x=0) =0

Velocity of the body is governed by the equation, v=ax3/2 and a=5m−1/2/s 

Final velocity v (at x=2m) =102m/s

Work done, W= Change in kinetic energy

                          =(1/2)m(v2−u2)

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