Mathematics (AS & A Level) · May / June 2026 · Paper 41 · Question 6
9709
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Three small smooth spheres A, B and C of equal radii and masses m kg, 2 kg and 4 kg respectively, lie at rest in that order in a straight line on a smooth horizontal plane. Sphere A is projected directly towards B with speed m m 2 s 1 – and B is projected directly towards A with speed ( ) m m 2 s 1 – + . After the spheres collide, both A and B move in the same direction as A’s original motion with speeds m 2 s 1 – and . m 3 25 s 1 – respectively.
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6(a)[4]
6(b)[6]
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