A-LevelMathematicsMechanicsMay/June 2017Paper 4 Q56 Marks
A particle is projected vertically upwards from a point O with a speed of 12 m s⁻¹. Two seconds later a second particle is projected vertically upwards from O with a speed of 20 m s⁻¹. At time t s after the second particle is projected, the two particles collide.
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