A-LevelPhysicsWork, energy and powerOct/Nov 2015Paper 1 Q161 Mark
A car of mass 500 kg is at rest at point X on a slope, as shown. The car's brakes are released and the car rolls down the slope with its engine switched off. At point Y the car has moved through a vertical height of 30 m and has a speed of 11 ms⁻¹. [Figure showing a car on a slope moving from X to Y]
A3.0 × 10⁴ J
B1.2 x 10⁵ J
C1.5 × 10⁵ J
D1.8 × 10⁵ J
✓ Correct Answer
The correct answer is B: 1.2 x 10⁵ 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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