A body of mass $ 1 \;kg$ begins to move under the action of a time dependent force $\overrightarrow{F} = (2 t \hat{i} + 3 t^2 \hat{j}) N$, where $\hat{i}$ and $\hat{j}$ are unit vectors along x and y axis. What power will be developed by the force at the time $t$ ?
