A-LevelPhysicsDynamicsMay/June 2015Paper 1 Q101 Mark
A firework rocket is fired vertically upwards. The fuel burns and produces a constant upwards force on the rocket. After 5 seconds there is no fuel left. Air resistance is negligible. What is the acceleration before and after 5 seconds?
Abefore 5 seconds: constant, after 5 seconds: constant
Bbefore 5 seconds: constant, after 5 seconds: zero
Cbefore 5 seconds: increasing, after 5 seconds: constant
Dbefore 5 seconds: increasing, after 5 seconds: zero
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of dynamics within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
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