A-LevelPhysicsDynamicsMay/June 2023Paper 1 Q101 Mark
Two balls, X and Y, approach each other along the same straight line and collide. The collision is perfectly elastic. Their initial speeds are uₓ and uᵧ respectively. After the collision they move apart with speeds vₓ and vᵧ respectively. Their directions are shown. [Figure 10.1] Which equation is correct?
Auₓ + uᵧ = vₓ + vᵧ
Buₓ + uᵧ = vₓ - vᵧ
Cuₓ - uᵧ = vₓ + vᵧ
Duₓ - uᵧ = vₓ - vᵧ
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The correct answer is A. This question tests the candidate's understanding of dynamics within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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