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$)t^{\frac{2}{2}}($ii$)$ t $($iii$)($iv$)t^2$

A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time $t$ is proportional to $($i$)t^{\frac{1}{2}}($ii$)t($iii$)t^{\frac{1}{2}}($iv$)t^3$