Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Forces, Movement, Shape, and Momentum
173 practice questions
Topics covered
- FORCES AND SHAPE29 practice questions
- HOOKE'S LAW16 practice questions
- FORCE, MASS AND ACCELERATION18 practice questions
- FRICTION AND BRAKING20 practice questions
- AIR RESISTANCE AND TERMINAL VELOCITY19 practice questions
- MOMENTUM20 practice questions
- NEWTON'S THIRD LAW: ACTION AND REACTION16 practice questions
- THE TURNING EFFECT OF FORCES24 practice questions
Practice questions
81–90 of 173
Question 81
4 marks · Hard
Answer and see the solution →A car travels at 50 mph on a wet road surface and an identical car travels at the same speed but on a dry road. Both drivers apply the brakes at the same time when they see an obstacle ahead.
(a)[2 marks]Explain why the car on the wet road will have a longer stopping distance. Refer to the forces involved in your answer.
(b)[2 marks]State two factors, apart from the road surface, that could increase the braking distance for both cars.
Question 82
3 marks · Hard
Answer and see the solution →A driver needs to stop suddenly when a traffic light turns red. The car is moving at a higher speed than usual, and the driver is very tired.
(a)[2 marks]Describe how the driver’s tiredness and the higher speed affect the thinking and braking distances.
(b)[1 mark]Explain the effect of these factors on the total stopping distance.
Question 83
3 marks · Hard
Answer and see the solution →The table below gives the thinking distance and braking distance for a car at two different speeds in ideal conditions.
Speed (mph) Thinking distance (m) Braking distance (m) 30 9 14 60 18 55 (a)[2 marks]Compare how thinking distance and braking distance change when the speed doubles from 30 mph to 60 mph.
(b)[1 mark]Explain why braking distance increases much more than thinking distance as speed increases.
Question 84
2 marks · Easy
Answer and see the solution →Calculate the weight of a bowling ball with a mass of 6.0 kg on Earth. Use .
Question 85
2 marks · Easy
Answer and see the solution →Describe what happens to the forces acting on a skydiver just after jumping out of a plane, and how these forces change as the skydiver speeds up.
Question 86
2 marks · Easy
Answer and see the solution →An astronaut drops a tool with a mass of 2.5 kg on a planet where the gravitational field strength is 4 N/kg. Calculate the weight of the tool.
Question 87
3 marks · Easy
Answer and see the solution →Explain why a falling coin eventually stops accelerating and continues to fall at a constant speed. Include what happens to the forces acting on it.
Question 88
2 marks · Easy
Answer and see the solution →Calculate the weight of a backpack with a mass of 3.0 kg on Earth. Use g = 10 N/kg.
Question 89
3 marks · Easy
Answer and see the solution →A tennis ball is dropped from a balcony. It falls straight down through the air.
(a)[1 mark]State the two forces acting on the tennis ball as it falls.
(b)[1 mark]As the ball falls faster, describe what happens to the size of the air resistance.
(c)[1 mark]Eventually the ball falls at a constant speed. What is the name of this constant speed?
Question 90
3 marks · Easy
Answer and see the solution →A cyclist is moving quickly down a hill and eventually reaches a speed where her speed does not increase any further, even though she is still going downhill.
Explain why the cyclist does not keep speeding up. In your answer, refer to the forces acting on the cyclist.