The table shows the distance travelled by a cyclist at different times.
Table
| Time (s) | Distance (m) |
|---|---|
| 0 | 0 |
| 10 | 80 |
| 20 | 120 |
| 30 | 120 |
| 40 | 170 |
The cyclist moves at a steady speed between each pair of readings.
Which statement describes the motion of the cyclist?
Fastest from 30 s30\ \text{s}30 s to 40 s40\ \text{s}40 s, and at constant speed from 20 s20\ \text{s}20 s to 30 s30\ \text{s}30 s
Fastest from 0 s0\ \text{s}0 s to 10 s10\ \text{s}10 s, and at constant speed from 20 s20\ \text{s}20 s to 30 s30\ \text{s}30 s
Fastest from 30 s30\ \text{s}30 s to 40 s40\ \text{s}40 s, and stationary from 20 s20\ \text{s}20 s to 30 s30\ \text{s}30 s
Fastest from 0 s0\ \text{s}0 s to 10 s10\ \text{s}10 s, and stationary from 20 s20\ \text{s}20 s to 30 s30\ \text{s}30 s
43 exam-style questions on OCR GCSE Physics 2.1 Motion, covering 2.1.1 Measuring distance and time, 2.1.2 Measuring speed, 2.1.3 Ratios, units and rates in motion, 2.1.4 Scalars and vectors in motion, 2.1.5 Distance-time and velocity-time graphs, 2.1.6 Area under a velocity-time graph, 2.1.7 Average speed for non-uniform motion, and 2.1.8 Uniform motion and uniform acceleration. Each one has a worked solution and a mark scheme showing where the marks go.