On a construction site, a crane raises concrete beams. The crane carries out $4000\,\text{kJ}$ of useful work in $160\,\text{s}$. What is the useful output power of the crane?
- A$0.04\,\text{kW}$
- B$25\,\text{W}$
- C$25\,\text{kW}$
- D$640\,\text{kW}$
Physics 0625 · IGCSE · Energy, work and power