A-LevelPhysicsDynamicsOct/Nov 2024Paper 1 Q101 Mark

Two train carriages each of mass 5000 kg roll toward one another on a horizontal frictionless track. One is travelling at a speed of 2.00 ms⁻¹ and the other at a speed of 1.00 ms⁻¹, as shown. [Figure 10.1] They collide and join together. What is the kinetic energy lost during the collision?

Q: What is the correct answer to this A-Level Physics question?

The correct answer is C: 11250 J.

Q: What topic does this question test?

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

A1250 J

B7500 J

C11250 J

D12500 J

✓ Correct Answer

The correct answer is C: 11250 J

📋 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 Oct/Nov 2024 examination, Paper 1 Variant 2.

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