A minibus is tested with different numbers of passengers. All other conditions are unchanged.
| Test | Speed in m/s\mathrm{m/s}m/s | Thinking distance in m\mathrm{m}m | Stopping distance in m\mathrm{m}m |
|---|---|---|---|
| T | 12 | 6 | 22 |
| U | 12 | 6 | 28 |
Which change could explain the measurements in test U?
It carried more passengers, giving a greater mass and a longer thinking distance.
It carried more passengers, giving a greater mass and a longer braking distance.
It carried fewer passengers, giving a smaller mass and a longer braking distance.
It carried fewer passengers, giving a smaller mass and a longer thinking distance.
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.