A-LevelPhysicsWork, energy and powerFeb/Mar 2024Paper 1 Q181 Mark
A ball is projected into the air from horizontal ground and follows the path shown in the diagram. [Figure showing a projectile path with points Q, R, S, T and their heights] At points Q, R, S and T, the ball has kinetic energies EQ, ER, Es and ET respectively. The heights above the ground of these four points are shown. Air resistance is negligible. Which difference in kinetic energies is the smallest?
AEQ - Es
BEs - ER
CET - EQ
DET - ER
✓ Correct Answer
The correct answer is A: EQ - Es
📋 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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