A-LevelPhysicsDynamicsMay/June 2018Paper 1 Q91 Mark
An elastic collision occurs between two bodies X and Y. The mass of body X is m and the mass of body Y is 4m. Body X travels at speed v before the collision and speed (3v)/5 in the opposite direction after the collision. Body Y is stationary before the collision. [Diagram] What is the kinetic energy of body Y after the collision?
A(8/10)mv²
B(34/50)mv²
C(16/50)mv²
D(1/5)mv²
✓ Correct Answer
The correct answer is C. 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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