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8.1 Physics on the move

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Question 2
F

The Figure shows the thinking distance and the braking distance of a car at three different speeds.

Figure

image

a.

Use the Figure to determine the overall stopping distance at 22 m/s.

[1]
b.

Use the equation: distance=speed×time\text{distance} = \text{speed} \times \text{time}distance=speed×time

Calculate the reaction time of the driver at 13 m/s.

[2]
c.

Describe how the braking distance changes as the speed increases.

[2]
d.

The speed limit on a road outside a school is lowered.

Explain how this makes the road safer for children.

[2]
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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