Mathematics (AS & A Level) · May / June 2025 · Paper 42 · Question 2
9709
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Two particles P and Q, of masses 0.2 kg and 0.1 kg respectively, are free to move in a straight line on a smooth horizontal plane. P is projected towards Q with speed . ms 5 1 - At the same instant, Q is projected away from P with speed . ms 2 1 - When P collides with Q, the particles coalesce. Find the kinetic energy lost during the collision. [4]
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