A particle of mass 1.6kg is projected with a speed of 20ms¯¹ up a line of greatest slope of a smooth plane inclined at α to the horizontal, where tan α = 3/4. Use an energy method to find the distance the particle moves up the plane before coming to instantaneous rest.
📋 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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