GCSE Physics – Momentum I

Last updated: 26/05/2020
Edexcel GCSE Science – Combined science higher Motion and forces GCSE Physics – Momentum I

Learning Objectives

-I can calculate momentum when two objects collide
-I can recall the units needed for F = mv – mu / t
-I can rearrange F = mv – mu / t
-I can use F = mv – mu / t
-I can estimate the forces in rapid large deceleration

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  1. Current
  2. Review
  3. Answered

  1. What do crumple zones do in cars?

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  2. Why do car safety features extend the time of collision?

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  3. If velocity is negative what is the direction of travel?

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  4. Why are recoil velocities negative?

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  5. What is Newton’s Second Law?

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  6. What is the acceleration formula?

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  7. What is mv?

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  8. What is t?

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  9. How can we combine Newton’s Second Law and the acceleration formula?

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  10. What force is needed to get a 30 kg stationary bicycle moving at 12 m/s in 5 s?

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  11. What force is needed to get a 70 kg stationary man moving at 8 m/s in 10 s?

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  12. A 1,500 kg car accelerates from rest to a velocity of 30 m/s in 20 seconds. What is the force acting on the car?

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  13. A 1000 kg car accelerates from rest to a velocity of 50 m/s in 55 seconds. What is the force acting on the car?

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  14. A boy of mass 50 kg on ice skates throws a ball of 1 kg in front of him at a velocity of 2.5 m/s. At what velocity will he move?

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  15. A car of mass 1000 kg travelling at 20 m/s collides with a stationary car of mass 1000 kg. The vehicles move together after impact. Calculate their velocity.

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  16. A car of mass 2000 kg travelling at 5 m/s collides with a stationary car of mass 500 kg. The vehicles move together after impact. Calculate their velocity.

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  17. A 12,000 kg lorry travelling at 2 m/s collides with a stationary car of mass 1500 kg, and the vehicles move together after impact. What is their velocity?

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  18. A lorry of mass 12,000 kg travelling at 15 m/s crashes into a moving car of mass 1500 kg, travelling at 5 m/s. The vehicles move together after impact – what is their velocity?

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  19. A car of mass 1500 kg travelling at 10 m/s crashes into a car of mass 1500 kg travelling at 5 m/s. The vehicles move together after impact – what is their velocity?

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  20. A cannon of mass 300 kg, with a 5 kg cannonball is fired. The ball moves with a velocity 50 m/s. Calculate the recoil velocity of the cannon.

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  21. A cannon of mass 200 kg, with a 10 kg cannonball is fired. The ball moves with a velocity 80 m/s. Calculate the recoil velocity of the cannon.

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  22. A pistol of 0.5 kg fires a 0.05 kg bullet at 300 m/s. Calculate the recoil velocity of the gun.

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  23. A shotgun of mass 3 kg fires a bullet of 0.1 kg at a velocity of 250 m/s. What is the recoil velocity of the gun?

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  24. A cannon fires a 10 kg cannonball at 100 m/s and recoils at a velocity of 2 m/s. What is the mass of the cannon?

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  25. A van of mass 5,000 kg travelling at 10 m/s collides with a stationary car. The vehicles move off with a velocity of 6 m/s, so what is the mass of the car?

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