A-LevelPhysicsWork, energy and powerOct/Nov 2009Paper 1 Q141 Mark

Two trolleys are placed together on a horizontal runway with a compressed spring between them. [Figure 14.1] When they are released, the 2 kg trolley moves to the left at 2 m s⁻¹. How much energy was stored in the spring?

Q: What topic does this question test?

This question tests Work, energy and power in A-Level Physics (syllabus code 9702). It is worth 1 mark.

A4 J

B6 J

C8 J

D12 J

✓ Correct Answer

The correct answer is D: 12 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 Work, energy and power in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2009 examination, Paper 1 Variant 2.

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