A-LevelPhysicsWork, energy and powerOct/Nov 2024Paper 1 Q161 Mark

A model car travels at a constant velocity of 12 ms⁻¹ in a straight horizontal line. The input power to the engine of the car is 800 W. The efficiency of the engine is 60%. What is the total horizontal resistive force on the car?

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.

A27 N

B40 N

C67 N

D110 N

✓ Correct Answer

The correct answer is B: 40 N

📋 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 2024 examination, Paper 1 Variant 2.

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