A force of $F=10\text{ N}$ acts on a body and displaces it by $d=5\text{ m}$ in the direction of the force. Calculate the work done in Joules.

Solution

1. Identify the given values: force $F=10\text{ N}$ and displacement $d=5\text{ m}$.
2. Use the work formula $W=F\cdot d$, since the force and displacement are in the same direction.
3. Calculate the work: $$\begin{array}{rl}W& =10\text{ N}\times 5\text{ m}\\ & =50\text{ J}\end{array}$$.
4. Hence the answer is (B).