Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Forces and Motion
367 practice questions
Topics covered
Practice questions
121–130 of 181 · Normal
Question 121
2 marks · Normal
Answer and see the solution →State what is meant by (a) thinking distance, and (b) braking distance of a vehicle.
(a)[1 mark]State what is meant by thinking distance.
(b)[1 mark]State what is meant by braking distance.
Question 122
3 marks · Normal
Answer and see the solution →A driver is travelling at night when it begins to rain heavily. Describe and explain how both the thinking distance and the braking distance are affected, giving a reason for each.
Question 123
3 marks · Normal
Answer and see the solution →The table below shows the stopping distances for a car with good tyres and brakes on a dry road:
Speed (mph) Thinking distance (m) Braking distance (m) Total stopping distance (m) 30 9 14 50 15 38 (a) Complete the table by calculating the total stopping distance for each speed.
(a)[2 marks](b)[1 mark](b) Use the table to state how the total stopping distance changes as the speed increases.
Question 124
4 marks · Normal
Answer and see the solution →Explain how each of the following factors affects the braking distance of a vehicle. (a) The mass of the vehicle (b) The speed of the vehicle (c) The condition of the road surface (d) The condition of the tyres
(a)[1 mark](b)[1 mark](c)[1 mark](d)[1 mark]Question 125
4 marks · Normal
Answer and see the solution →A van is travelling along a dry road at 40 mph. The thinking distance is 12 m and the braking distance is 24 m.
(a)[1 mark]Calculate the total stopping distance for the van.
(b)[2 marks]If the driver was distracted, the reaction time would increase. Explain what would happen to the stopping distance.
(c)[1 mark]The braking distance would remain the same. Explain why.
Question 126
1 mark · Normal
Answer and check →Which of the following would NOT increase the stopping distance of a car?
- A.Well-inflated tyres with deep tread
- B.Wet and icy road surface
- C.Driver is tired
- D.Increased vehicle speed
Question 127
3 marks · Normal
Answer and see the solution →A cyclist is riding at 20 mph on a dry road. The thinking distance for the cyclist is 6 m. The braking distance is also 6 m. The road suddenly becomes wet.
(a)[1 mark]Calculate the total stopping distance for the cyclist on the dry road.
(b)[2 marks]Explain what will happen to the stopping distance if the road becomes wet. State the reason.
Question 128
2 marks · Normal
Answer and see the solution →Calculate the weight of an object with a mass of 4.5 kg on the Moon, where the gravitational field strength is 1.6 N/kg.
Question 129
2 marks · Normal
Answer and see the solution →State two factors that affect the size of the air resistance acting on a moving object.
Question 130
4 marks · Normal
Answer and see the solution →A stone is dropped from rest from a tall building and falls straight down through air.
(a)[2 marks]Draw and label all the forces acting on the stone just after it is released.
(b)[2 marks]Describe how the forces acting on the stone change as it falls and approaches terminal velocity.