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8.1 Physics on the move

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Question 12
F

A car brakes on a wet road. Its braking distance is longer than on a dry road at the same speed.

Which statement explains why?

[1]
A

There is less friction, so the driver takes longer to react

B

There is less friction, so the deceleration of the car is smaller

C

There is more friction, so the tyres slide over the road surface

D

The water adds mass to the car, so the brakes give less force

Markscheme

8.1 Physics on the move Questions

  1. GCSE
  2. /Physics
  3. /8.1 Physics on the move

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.

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