A-LevelMathematicsMechanicsMay/June 2025Paper 4 Q24 Marks
Two particles P and Q, of masses 0.2kg and 0.1kg respectively, are free to move in a straight line on a smooth horizontal plane. P is projected towards Q with speed 5ms⁻¹. At the same instant, Q is projected away from P with speed 2 ms⁻¹. When P collides with Q, the particles coalesce.
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