A-LevelPhysicsDynamicsMay/June 2022Paper 1 Q91 Mark
A stone S and a foam rubber ball R are identical spheres of equal volume. They are released from rest at time t = 0 and fall vertically through the air. Both reach terminal velocity. Which graph best shows the variation with time t of the speed v of the stone and of the rubber ball?
A[Graph A: S reaches terminal velocity faster than R, both curved upwards to a constant speed]
B[Graph B: S reaches terminal velocity faster than R, both curved upwards to a constant speed, with R's initial curve being less steep]
C[Graph C: S and R reach terminal velocity at the same time and follow the same curved path upwards]
D[Graph D: R reaches terminal velocity faster than S, both curved upwards to a constant speed]
✓ 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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