GCSE Physics – Reaction times – Primrose Kitten

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GCSE Physics – Reaction times

Last updated: 26/03/2021

OCR Gateway GCSE Science – Combined science higher Physics on the move GCSE Physics – Reaction times

Learning Objectives

-I can describe reaction time, thinking distance and braking distance
-I can describe factors that affect thinking distance and braking distance

Time limit: 0

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Question 1 of 24

1. Question
What is stopping distance?
- The shortest distance which a car can stop in
- The longest distance which a car can stop in
- The time which a car takes to stop
- The time which a vehicle takes to accelerate
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Question 2 of 24

2. Question
How is stopping distance calculated?
- Thinking distance + braking distance
- Thinking distance – braking distance
- Thinking distance x braking distance
- Thinking distance / braking distance
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Question 3 of 24

3. Question
What is thinking distance?
- The distance a vehicle travels before the driver applies the breaks
- The distance a vehicle travels after the driver applies the breaks
- The distance a vehicle travels before the driver needs to stop
- The distance a vehicle travels throughout its entire journey
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Question 4 of 24

4. Question
What is braking distance?
- The distance a vehicle travels whilst decelerating due to braking
- The distance a vehicle travels whilst accelerating
- The distance a vehicle travels before the driver needs to stop
- The distance a vehicle travels before the driver applies the breaks
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Question 5 of 24

5. Question
What is thinking distance affected by?
- Reaction time
- Brake quality
- Quality of the road
- Tyre tread
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Question 6 of 24

6. Question
How can reaction time be affected?
- All of these answers
- Tiredness
- Drugs and alcohol
- Distractions
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Question 7 of 24

7. Question
What do longer reaction times cause?
- Increases the thinking distance
- Decreases the thinking distance
- Does not change the thinking distance
- Reduces the thinking distance to 0
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Question 8 of 24

8. Question
What does an increase in thinking distance cause?
- An increase in stopping distance
- A decrease in stopping distance
- No change in stopping distance
- Stopping distance decreases to 0
Correct

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Question 9 of 24

9. Question
How can we measure reaction times?
- Drop a ruler between someone's open hand
- Drop a ruler between someone's closed hand
- Drop a ruler between your own open hand
- Drop a ruler between your own closed hand
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Question 10 of 24

10. Question
How does the ruler test measure reaction times?
- The higher the reaction time, the further the ruler falls
- The higher the reaction time, the shorter the ruler falls
- The lower the reaction time, the further the ruler falls
- There is no correlation
Correct

Incorrect
Question 11 of 24

11. Question
How can braking distance be affected?
- All of these answers
- Poor road conditions
- Poor weather conditions
- Poor vehicle conditions
Correct

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Question 12 of 24

12. Question
What happens when force is applied to brakes?
- The brakes do work on the wheels
- The wheels do work on the brakes
- The brakes lose kinetic energy
- The brakes do no work
Correct

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Question 13 of 24

13. Question
What happens when the brakes do work on the wheels?
- The vehicle loses kinetic energy
- The vehicle loses chemical energy
- The vehicle loses nuclear energy
- The vehicle loses gravitational potential energy
Correct

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Question 14 of 24

14. Question
What happens to the vehicle’s kinetic energy?
- It is dissipated as heat
- It is dissipated as nuclear energy
- It is dissipated as gravitational energy
- It is dissipated as potential energy
Correct

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Question 15 of 24

15. Question
What happens to the temperature of the brakes as they are used?
- Temperature increases
- Temperature decreases
- Temperature does not change
- Temperature is 0
Correct

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Question 16 of 24

16. Question
If a vehicle travels faster, what happens to the braking force needed to stop the car?
- The braking force needed increases
- The braking force needed decreases
- The braking force needed does not change
- The braking force needed is 0
Correct

Incorrect
Question 17 of 24

17. Question
What does a greater braking force produce?
- A greater deceleration
- A greater acceleration
- No change to deceleration
- A shorter stopping distance
Correct

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Question 18 of 24

18. Question
What is an average thinking distance when travelling at 20 mph?
- 6 m
- 60 m
- 16 m
- 600m
Correct

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Question 19 of 24

19. Question
What is an average thinking distance when travelling at 40 mph?
- 12 m
- 120 m
- 21 m
- 1200 m
Correct

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Question 20 of 24

20. Question
What happens to thinking distance when speed doubles?
- Thinking distance doubles
- Thinking distance halves
- Thinking distance quadruples
- Thinking distance triples
Correct

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Question 21 of 24

21. Question
What is an average braking distance when travelling at 20 mph?
- 6 m
- 60 m
- 16 m
- 600 m
Correct

Incorrect
Question 22 of 24

22. Question
What is an average braking distance when travelling at 40 mph?
- 24m
- 240 m
- 2400 m
- 2.40 m
Correct

Incorrect
Question 23 of 24

23. Question
What happens to braking distance when speed doubles?
- Braking distance quadruples
- Braking distance halves
- Braking distance doubles
- Braking distance triples
Correct

Incorrect
Question 24 of 24

24. Question
Why does braking distance quadruple when speed doubles?
- As kinetic energy increases by a factor of 4
- As kinetic energy increases by a factor of 2
- As kinetic energy increases by a factor of 8
- As kinetic energy increases by a factor of 16
Correct

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