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Edexcel IGCSE Physics 1.20 factors affecting stopping distance

Practise stopping-distance questions by deciding which factor affects thinking distance, braking distance or both, then linking it to the vehicle context.

Syllabus
First assessment 2019
Course
Physics 4PH1

Exam points

  • Distinguish thinking-distance factors such as tiredness, drugs, alcohol or distractions.
  • State how speed affects both thinking distance and braking distance in vehicle contexts.
  • Choose braking-distance factors including worn tyres, wet roads, greater mass or poor brakes.

1.20 Factors affecting stopping distance question 1

[Maximum number: 2]

The graph shows how the thinking distance and the braking distance vary with the speed of a car.

Figure for Question 1.20 Factors affecting stopping distance question 1 — Edexcel IGCSE Physics

Question (a)

(a)

Which of these does not affect thinking distance?

A

alcohol consumed by the driver

B

condition of the road

C

speed of the car

D

tiredness of the driver

[ 1 ]

Question (b)

(b)

Which of these would increase the braking distance of the car?

A

faster reaction time of driver

B

ice on the road

C

more powerful brakes

D

tyres with more grip

[ 1 ]
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