O-LevelAdditional MathematicsVectors in two dimensionsMay/June 2012Paper 1 Q1210 Marks
Answer only one of the following two alternatives. EITHER At 1200 hours, a ship has position vector (54i + 16j) km relative to a lighthouse, where i is a unit vector due East and j is a unit vector due North. The ship is travelling with a speed of 20km h⁻¹ in the direction 3i +4j.
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