A-LevelPhysicsDynamics9702/12 · May/June 2025 · Q121 Mark
A stone is released from rest and falls a long distance in air. Which graph could show the variation with time t of the acceleration a of the stone?
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AGraph A: a vs t, a starts at maximum, decreases asymptotically to 0.
BGraph B: a vs t, a starts at maximum, decreases linearly to 0.
CGraph C: a vs t, a is constant and positive.
DGraph D: a vs t, a starts at maximum, decreases exponentially to 0.
✓ Correct answer
D: Graph D: a vs t, a starts at maximum, decreases exponentially to 0.
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