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Physics (AS & A Level) · Feb / March 2017 · Paper 12 · Question 10

9702Linear momentum and its conservation

A stationary firework explodes into three pieces. The masses and the velocities of the three pieces immediately after the explosion are shown. What are speed v₁ and speed v₂?

  1. Av₁ = 4.0 m s⁻¹, v₂ = 4.0 m s⁻¹
  2. Bv₁ = 9.2 m s⁻¹, v₂ = 9.2 m s⁻¹
  3. Cv₁ = 14 m s⁻¹, v₂ = 14 m s⁻¹
  4. Dv₁ = 16 m s⁻¹, v₂ = 16 m s⁻¹

As printed in the paper

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Correct answer: B. v₁ = 9.2 m s⁻¹, v₂ = 9.2 m s⁻¹

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