A coach and its driver complete two test runs on the same road in the same weather conditions. The coach travels at the same speed in both runs.
| Test | Speed in m/s\mathrm{m/s}m/s | Thinking distance in m\mathrm{m}m | Stopping distance in m\mathrm{m}m |
|---|---|---|---|
| A | 15 | 8 | 33 |
| B | 15 | 12 | 33 |
Which statement about the brakes in test B could explain these results?
The braking force was smaller in test B.
The brakes in test B took longer to apply.
The braking force was greater in test B.
The braking force was unchanged in test B.
126 exam-style questions on Edexcel GCSE Physics 2.5 Stopping and braking distances, covering 2.5.1 Stopping distance and reaction time, 2.5.2 Factors affecting stopping distance, 2.5.3 Dangers of large decelerations, and 2.5.4 Braking distance and initial speed. Each one has a worked solution and a mark scheme showing where the marks go.