The graph shows how the acceleration of an object moving in a straight line varies with time. [Figure 4.1] The object starts from rest. Which graph shows the variation with time of the velocity of the object over the same time interval?
✓ Correct Answer
The correct answer is A: Graph A showing velocity starting at zero, increasing with a positive gradient (initially concave up, then concave down) to a maximum, then decreasing symmetrically with a negative gradient (concave down, then concave up) back towards zero.
📋 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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