O-LevelAdditional MathematicsVectors in two dimensionsMay/June 2022Paper 2 Q87 Marks
In this question, i is a unit vector due east and j is a unit vector due north. Distances are measured in kilometres and time is measured in hours. At 0900, ship A leaves a point P with position vector 5i+16j relative to an origin O. It sails with a constant speed of 6√3 on a bearing of 120°.
📋 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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