Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
MOMENTUM
20 practice questions
Practice questions
1–10 of 20
Question 1
1 mark · Easy
Answer and see the solution →A tennis ball has a mass of 0.06 kg. It is moving with a velocity of 10 m/s. Calculate the momentum of the tennis ball.
Question 2
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 3
1 mark · Easy
Answer and see the solution →State the law of conservation of momentum.
Question 4
2 marks · Easy
Answer and see the solution →Explain why a rocket moves forward when burning fuel, even in the vacuum of space.
Question 5
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 6
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 7
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 8
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 9
3 marks · Normal
Answer and see the solution →A van of mass 1800 kg is moving at a velocity of 15 m/s. Calculate its momentum.
Question 10
4 marks · Normal
Answer and see the solution →A 0.5 kg football is kicked so that it moves with a velocity of 8 m/s towards a goal.
(a)[2 marks]Calculate the momentum of the football.
(b)[2 marks]If the football comes to rest in 0.4 s when caught by the goalkeeper, calculate the average force applied by the goalkeeper to stop it.