A car engine applies a force of $600\,\text{N}$ to move the car through $1.0\,\text{km}$ in $150\,\text{s}$. What is the mean useful output power of the engine?
- A$4.0\,\text{W}$
- B$4.0\,\text{kW}$
- C$90\,\text{kW}$
- D$90\,\text{MW}$
Physics 9702 · AS & A Level · Energy conservation