A cyclist does two braking tests on the same bicycle. The total mass of the cyclist and bicycle is the same in both tests.
The table shows the results of the first test.
| Quantity | First test |
|---|---|
| Speed | 8 m/s |
| Thinking distance | 6 m |
| Braking distance | 12 m |
In the second test, the cyclist travels at 10 m/s. The road is wet, so the braking force is 0.75 times the braking force in the first test. The cyclist is tired, so their reaction time is twice as long as in the first test.
Calculate the stopping distance in the second test.
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.