A-LevelPhysicsForces, density and pressureMay/June 2019Paper 1 Q141 Mark

A car of mass m travels at constant speed up a slope at an angle θ to the horizontal, as shown in the diagram. Air resistance and friction provide a resistive force F. The acceleration of free fall is g. [Figure 14.1] What is the force needed to propel the car at this constant speed?

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

The correct answer is D: mg sin θ + F.

Q: What topic does this question test?

This question tests Forces, density and pressure in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Amg cos θ

Bmg sin θ

Cmg cos θ + F

Dmg sin θ + F

✓ Correct Answer

The correct answer is D: mg sin θ + F

📋 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 Forces, density and pressure in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics May/June 2019 examination, Paper 1 Variant 2.

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