A-LevelPhysicsDynamicsMay/June 2015Paper 1 Q111 Mark

Trolley X, moving along a horizontal frictionless track, collides with a stationary trolley Y. The two trolleys become attached and move off together. Which statement about this interaction is correct?

Q: What topic does this question test?

This question tests Dynamics in A-Level Physics (syllabus code 9702). It is worth 1 mark.

ASome of the kinetic energy of trolley X is changed to momentum in the collision.

BSome of the momentum of trolley X is changed to kinetic energy in the collision.

CTrolley X loses some of its momentum as heat in the collision.

DTrolley X shares its momentum with trolley Y but some of its kinetic energy is lost.

✓ Correct Answer

The correct answer is D: Trolley X shares its momentum with trolley Y but some of its kinetic energy is lost.

📋 Examiner Report & Trap Analysis

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...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Physics Question

Topic

This multiple-choice question tests Dynamics in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics May/June 2015 examination, Paper 1 Variant 2.

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