An object falls from a tall building. The graph shows how the velocity of the object changes with time t. [Figure 9.1] The acceleration of free fall is g. What describes the acceleration of the object at times t = Y and t = Z?
✓ Correct Answer
The correct answer is B: acceleration at t = Y: decreasing, acceleration at t = Z: 0
📋 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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