A body is initially at rest. It undergoes one-dimensional motion with constant acceleration. The power delivered to it at time t is proportional to (i) t^{\frac{1}{2}}t21 (ii) t^{\frac{3}{2}}t23 (iii) t2 (iv) t
Correct option is B) Given, u=0m/s a= constant acceleration. Power delivered, P=Fv. . . . .(1) From 1st equation of motion, v=u+at v=0+at=at Force, F=ma From equation (1), we get P=ma.at P=ma2t P∝t Power delivered is dircetly proportional to the time t. The correct option is B.
