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2 Motion and forces

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Question 13

A coach is tested at 30 m/s. It travels 72 m from the moment its brakes are applied until it stops. On a later journey, the same coach is travelling at 20 m/s when the driver detects an obstruction. The driver's reaction time is 0.75 s, and the road conditions and braking force are the same as in the test. What is the minimum distance in which the coach can stop?

[1]
A

32 m32\ \mathrm{m}32 m

B

47 m47\ \mathrm{m}47 m

C

63 m63\ \mathrm{m}63 m

D

87 m87\ \mathrm{m}87 m

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2 Motion and forces Questions

  1. GCSE
  2. /Physics
  3. /2 Motion and forces

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