A group of students investigated how the speed of a toy car affects its braking distance. Table 1 shows their results for one of the speeds tested.
Table 1
| Trial | Braking distance (cm) |
|---|---|
| 1 | 42.0 |
| 2 | 44.5 |
| 3 | 68.0 |
| 4 | 41.5 |
| 5 | 44.0 |
Use the results in Table 1 to calculate the mean braking distance.
39 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.