A-LevelMathematicsMechanicsMay/June 2022Paper 4 Q79 Marks
Two particles A and B, of masses 0.4kg and 0.2kg respectively, are moving down the same line of greatest slope of a smooth plane. The plane is inclined at 30° to the horizontal, and A is higher up the plane than B. When the particles collide, the speeds of A and B are 3ms¯¹ and 2ms¯¹ respectively. In the collision between the particles, the speed of A is reduced to 2.5 ms¯¹.
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