Question
A particle moves from a point $\left( { - 2\widehat i + 5\widehat j} \right)$ to $\left( {4\widehat j + 3\widehat k} \right)$ when a force of $\left( {4\widehat i + 3\widehat j} \right)$ N is applied. How much work has been done by the force ?