O-LevelAdditional MathematicsDifferentiation and integrationMay/June 2021Paper 1 Q710 Marks
(a) In this question, all lengths are in metres and time, t, is in seconds. [Figure 7.1] The diagram shows the displacement-time graph for a runner, for $0 \le t \le 40$. (b) A particle, P, moves in a straight line such that its displacement from a fixed point at time t is s. The acceleration of P is given by $(2t+4)^{-\frac{1}{2}}$, for t > 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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