The table shows the thinking distance and braking distance of a car at different speeds.
Table
| Speed (m/s\text{m/s}m/s) | Thinking distance (m\text{m}m) | Braking distance (m\text{m}m) |
|---|---|---|
| 10 | 7 | 8 |
| 20 | 14 | 32 |
| 30 | 21 | 72 |
What is the braking distance of the car at a speed of 40 m/s?
96 m96\ \text{m}96 m
104 m104\ \text{m}104 m
112 m112\ \text{m}112 m
128 m128\ \text{m}128 m
50 exam-style questions on OCR GCSE Physics 8.1 Physics on the move, covering 8.1.1 Typical everyday speeds, 8.1.2 Typical everyday accelerations, 8.1.3 Ratios, units and rates on the road, 8.1.4 Human reaction times, 8.1.5 Factors affecting stopping distance, 8.1.6 Stopping distances at different speeds, 8.1.7 Dangers of large decelerations, 8.1.8 Estimating forces in road situations, and 8.1.9 Estimating the effects of large accelerations. Each one has a worked solution and a mark scheme showing where the marks go.