A-LevelPhysicsDynamics9702/12 · May/June 2016 · Q91 Mark
A ball falls vertically onto horizontal ground and rebounds, as shown. [Figure 9.1] The ball has momentum p₁ downwards just before hitting the ground. After rebounding, the ball leaves the ground with momentum p₂ upwards. The ball is in contact with the ground for 0.020 s. During this time interval, an average resultant force of 25 N acts on the ball. What is a possible combination of values for p₁ and p₂?
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.
Ap₁/kgms⁻¹: 0.15, p₂/kgms⁻¹: 0.65
Bp₁/kgms⁻¹: 0.20, p₂/kgms⁻¹: 0.30
Cp₁/kgms⁻¹: 0.30, p₂/kgms⁻¹: 0.20
Dp₁/kgms⁻¹: 0.65, p₂/kgms⁻¹: 0.15
✓ Correct answer
C: p₁/kgms⁻¹: 0.30, p₂/kgms⁻¹: 0.20
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Dynamics and see which topics are most likely to come up next.
Sign up free →