A train with a mass of $240\,000\,\text{kg}$ is moving at $60\,\text{m s}^{-1}$. When the brakes are used, it slows down for $10\,\text{minutes}$ before stopping completely. What is the average resultant force?
- A$24\,000\,\text{N}$
- B$40\,000\,\text{N}$
- C$480\,000\,\text{N}$
- D$720\,000\,\text{N}$