A-LevelMathematicsMechanicsOct/Nov 2024Paper 4 Q24 Marks
A block of mass 20kg is held at rest at the top of a plane inclined at 30° to the horizontal. The block is projected with speed 5ms⁻¹ down a line of greatest slope of the plane. There is a resistance force acting on the block. As the block moves 2m down the plane from its point of projection, the work done against this resistance force is 50J. Find the speed of the block when it has moved 2m down the plane.
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