A-LevelPhysicsDynamics9702/12 · Oct/Nov 2018 · Q71 Mark
A resultant force of 10 N acts on a body for a time of 2.0 s. Which graph could show the variation with time t of the momentum p of the body?
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.
Agraph showing momentum p increasing linearly from 0 to 20, passing through (1.0 s, 15 kg m s⁻¹).
Bgraph showing momentum p increasing linearly from 0 to 20, passing through (1.0 s, 10 kg m s⁻¹).
Cgraph showing momentum p increasing linearly from 0 to 10, passing through (1.0 s, 5 kg m s⁻¹).
Dgraph showing momentum p increasing linearly from 0 to 5, passing through (1.0 s, 2.5 kg m s⁻¹).
✓ Correct answer
B: graph showing momentum p increasing linearly from 0 to 20, passing through (1.0 s, 10 kg m s⁻¹).
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