Physics (AS & A Level) · Feb / March 2023 · Paper 12 · Question 8

A ship of mass $8.4 \times 10^7\,\text{kg}$ is approaching a harbour with speed $16.4\,\text{m}\,\text{s}^{-1}$. By using reverse thrust it can maintain a constant total stopping force of $920\,000\,\text{N}$. How long will it take to stop?

1. A15 seconds
2. B150 seconds
3. C25 minutes
4. D250 minutes

As printed in the paper