A car has $620\,\text{kJ}$ of kinetic energy. It brakes and comes to rest over a distance of $91\,\text{m}$. What is the average braking force acting on the car?
- A$0.15\,\text{N}$
- B$6.8\,\text{N}$
- C$6800\,\text{N}$
- D$56\,000\,\text{N}$
Physics 0625 · IGCSE · Energy, work and power