A-LevelPhysicsDynamicsFeb/Mar 2018Paper 1 Q71 Mark
A stone of mass m is dropped from a tall building. There is significant air resistance. The acceleration of free fall is g. When the stone is falling at a constant (terminal) velocity, which information is correct?
Amagnitude of the acceleration of the stone: g, magnitude of the force of gravity on the stone: zero, magnitude of the force of air resistance on the stone: mg
Bmagnitude of the acceleration of the stone: zero, magnitude of the force of gravity on the stone: mg, magnitude of the force of air resistance on the stone: mg
Cmagnitude of the acceleration of the stone: zero, magnitude of the force of gravity on the stone: zero, magnitude of the force of air resistance on the stone: mg
Dmagnitude of the acceleration of the stone: zero, magnitude of the force of gravity on the stone: mg, magnitude of the force of air resistance on the stone: zero
✓ Correct Answer
The correct answer is B. 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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