A-LevelPhysicsDynamicsMay/June 2016Paper 1 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?
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
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The correct answer is C. This question tests the candidate's understanding of dynamics within the Physicssyllabus. The examiner's mark scheme requires...
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