A-LevelPhysicsDynamics9702/12 · Feb/Mar 2017 · Q101 Mark
A stationary firework explodes into three pieces. The masses and the velocities of the three pieces immediately after the explosion are shown. [Figure showing explosion fragments with masses 50g, 50g, 100g and velocities V₁, V₂, 8 ms⁻¹ at angles] What are speed v₁ and speed v₂?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Av₁/ms⁻¹: 4.0, v₂/ms⁻¹: 4.0
Bv₁/ms⁻¹: 9.2, v₂/ms⁻¹: 9.2
Cv₁/ms⁻¹: 14, v₂/ms⁻¹: 14
Dv₁/ms⁻¹: 16, v₂/ms⁻¹: 16
✓ Correct answer
B: v₁/ms⁻¹: 9.2, v₂/ms⁻¹: 9.2
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