O-LevelPhysicsKinematicsOct/Nov 2025Paper 3 Q314 Marks
You will measure the average mass of a marble (glass ball) and investigate the speed of a marble rolling down a slope. You are provided with: • a small dish • 5 identical marbles (glass balls) • access to a top pan balance. • a clamp, stand and boss • 2 metre rules or wooden strips, arranged as shown in the diagram with a small gap between them to act as a track (ramp) for a marble • a small block of wood to act as a stopper at the end of the track • a stopwatch • an additional metre or half-metre rule, or a 30 cm ruler. The apparatus has been set up for you as shown in [Figure 3.1].
📋 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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