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
41–50 of 67 · Easy
Question 41
1 mark · Easy
Answer and check →Which quantity must be changed if you want to increase the momentum of an object without changing its velocity?
- A.Its mass
- B.Its shape
- C.Its speed
- D.Its position
Question 42
1 mark · Easy
Answer and see the solution →State the law of conservation of momentum.
Question 43
2 marks · Easy
Answer and see the solution →Explain why a rocket moves forward when burning fuel, even in the vacuum of space.
Question 44
2 marks · Easy
Answer and see the solution →A sprinter of mass 70 kg is running at a velocity of 8 m/s. She slows down to a stop in 4 seconds. Calculate her change in momentum and the average force needed to stop her.
Question 45
2 marks · Easy
Answer and see the solution →(a)[1 mark]State the equation linking force, change in momentum, and time.
(b)[1 mark]Give the SI unit of momentum.
Question 46
2 marks · Easy
Answer and see the solution →(a)[1 mark]A small skateboard of mass 2 kg is at rest. A person jumps onto it, giving the skateboard a velocity of 3 m/s. Calculate the momentum of the skateboard after the jump.
(b)[1 mark]If the person and skateboard have a combined mass of 40 kg and move off together at 2 m/s after the jump, what is their total momentum?
Question 47
2 marks · Easy
Answer and see the solution →Explain, using physics ideas about momentum, why soft sand at the end of an escape lane reduces the force on a lorry during an emergency stop.
Question 48
2 marks · Easy
Answer and see the solution →A man stands on the ground and pulls a rope that is attached to a heavy box. According to Newton's third law, what force acts on the man while he is pulling the rope? State both the direction and the object applying the force.
Question 49
2 marks · Easy
Answer and see the solution →When a rubber ball bounces against a hard wall, explain, using Newton’s third law, why the ball bounces back.
Question 50
2 marks · Easy
Answer and see the solution →Two ice skaters push against each other and move apart on a frozen lake. Using Newton’s third law, state how the forces on each skater compare. State the direction of each force.