Mathematics (AS & A Level) · May / June 2021 · Paper 43 · Question 1
9709
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Particles P of mass 0.4 kg and Q of mass 0.5 kg are free to move on a smooth horizontal plane. P and Q are moving directly towards each other with speeds 2.5 m s−1 and 1.5 m s−1 respectively. After P and Q collide, the speed of Q is twice the speed of P. Find the two possible values of the speed of P after the collision. [4]
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