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2 Motion and forces

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Question 53

During a brake test on a closed track, a minibus is travelling at 15 m/s when its driver sees a warning light. The driver's reaction time is 0.80 s and the minibus comes to rest 42 m from the point where the driver saw the light. The resultant braking force is constant at 12000 N. What is the mass of the minibus?

[1]
A

3200 kg3200\ \mathrm{kg}3200 kg

B

2240 kg2240\ \mathrm{kg}2240 kg

C

4480 kg4480\ \mathrm{kg}4480 kg

D

1600 kg1600\ \mathrm{kg}1600 kg

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2 Motion and forces Questions

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

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