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2.5 Stopping and braking distances

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Question 15

During a braking trial, a driver sees a warning light while a snowplough of mass 5000 kg is moving at 10 m/s. The mean resultant force on the snowplough after the brakes are applied is 25 000 N25\,000\ \mathrm{N}25000 N. The snowplough comes to rest 2.7 s after the warning light appears. What is the driver's reaction time?

[1]
A

0.70 s0.70\ \mathrm{s}0.70 s

B

2.0 s2.0\ \mathrm{s}2.0 s

C

2.7 s2.7\ \mathrm{s}2.7 s

D

0.50 s0.50\ \mathrm{s}0.50 s

Markscheme

2.5 Stopping and braking distances Questions

  1. GCSE
  2. /Physics
  3. /2.5 Stopping and braking distances

126 exam-style questions on Edexcel GCSE Physics 2.5 Stopping and braking distances, covering 2.5.1 Stopping distance and reaction time, 2.5.2 Factors affecting stopping distance, 2.5.3 Dangers of large decelerations, and 2.5.4 Braking distance and initial speed. Each one has a worked solution and a mark scheme showing where the marks go.

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