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.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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