A-LevelPhysicsDynamicsMay/June 2010Paper 1 Q101 Mark
The diagram shows two identical spheres X and Y. [Figure 10.1] Initially, X moves with speed v directly towards Y. Y is stationary. The spheres collide elastically. What happens?
AX moves with speed ½ v to the right, Y moves with speed ½ v to the right
BX moves with speed ½ v to the left, Y remains stationary
CX moves with speed ½ v to the left, Y moves with speed ½ v to the right
DX stops, Y moves with speed v to the right
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of dynamics within the Physicssyllabus. The examiner's mark scheme requires...
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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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