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Physics (AS & A Level) · May / June 2020 · Paper 11 · Question 10

9702Linear momentum and its conservation

A stationary toy gun fires a bullet. Which statement about the bullet and the gun, immediately after firing, is not correct?

  1. AThe force exerted on the bullet by the gun has the same magnitude as the force exerted on the gun by the bullet.
  2. BThe force exerted on the bullet by the gun is in the opposite direction to the force exerted on the gun by the bullet.
  3. CThe gun and the bullet have the same magnitude of momentum.
  4. DThe kinetic energy of the gun must equal the kinetic energy of the bullet.

As printed in the paper

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Correct answer: D. The kinetic energy of the gun must equal the kinetic energy of the bullet.

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