A tyre-testing centre records data for a minibus on a wet track. The same driver completes both runs, starting at the same speed each time.
| Tyres fitted | Thinking distance in m\text{m}m | Braking distance in m\text{m}m |
|---|---|---|
| deep-tread tyres | 16 | 42 |
| worn tyres | 16 | 68 |
Calculate how much larger, as a percentage, the total stopping distance is for the worn tyres than for the deep-tread tyres.
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.