The Table shows the time taken by four vehicles to reach a speed of 100 km/h from rest.
Table
| Vehicle | Time to reach 100 km/h from rest in s\text{s}s |
|---|---|
| sports car | 4.0 |
| family car | 10.0 |
| minibus | 16.0 |
| fully loaded lorry | 40.0 |
Which vehicle has the smallest acceleration?
Show that 100 km/h is about 28 m/s.
Use the equation: acceleration=change in velocitytime\text{acceleration} = \dfrac{\text{change in velocity}}{\text{time}}acceleration=timechange in velocity
Calculate the acceleration of the family car.
A student says:
'A typical family car can accelerate at 25 m/s2.'
Use your answer to (c) to explain why the student is wrong.
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.