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2 Motion and forces

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Question 3

On a test track, a lorry is brought to rest after its driver detects a hazard. At the original speed, the distance travelled before braking starts is 18 m, and the distance travelled while braking is 48 m. For a repeat test, the lorry travels at 70% of its original speed. The driver takes the same time to react, and the lorry's mass and braking force do not change.

What is the decrease in the lorry's stopping distance?

[1]
A

36.12 m36.12\ \mathrm{m}36.12 m

B

24.48 m24.48\ \mathrm{m}24.48 m

C

29.88 m29.88\ \mathrm{m}29.88 m

D

23.52 m23.52\ \mathrm{m}23.52 m

Markscheme

2 Motion and forces Questions

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

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