A-LevelPhysicsDynamicsOct/Nov 2018Paper 1 Q11 Mark

A car is travelling at a speed of 20 m s⁻¹. The table contains values for the kinetic energy and the momentum of the car. Which values are reasonable estimates?

Q: What topic does this question test?

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

Akinetic energy / J: 3 x 10⁵, momentum / kg m s⁻¹: 3 × 10⁴

Bkinetic energy / J: 3 x 10⁵, momentum / kg m s⁻¹: 5 x 10⁶

Ckinetic energy / J: 2 x 10⁷, momentum / kg m s⁻¹: 3 × 10⁴

Dkinetic energy / J: 2 x 10⁷, momentum / kg m s⁻¹: 5 x 10⁶

✓ Correct Answer

The correct answer is A: kinetic energy / J: 3 x 10⁵, momentum / kg m s⁻¹: 3 × 10⁴

📋 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 2018 examination, Paper 1 Variant 2.

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