A-LevelPhysicsKinematicsMay/June 2011Paper 1 Q91 Mark
A small glider moves along a friction-free horizontal air track as shown below. At each end of the air track there is a perfectly elastic buffer. Which graph represents the variation with time t of the velocity v of the glider as it moves between the two buffers?
Av-t graph showing square wave oscillations with varying amplitudes.
Bv-t graph showing square wave oscillations, initially positive, then negative with smaller amplitude, then positive with larger amplitude.
Cv-t graph showing triangular wave oscillations, velocity magnitude decreasing and increasing.
Dv-t graph showing square wave oscillations, constant positive velocity then instant flip to constant negative velocity of same magnitude.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of kinematics within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
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