A-LevelPhysicsDynamicsFeb/Mar 2024Paper 1 Q81 Mark
Two balls P and Q, of equal mass, move along a straight line directly towards each other as shown. [Figure showing balls P and Q approaching] Ball P has velocity 1.30ms⁻¹ to the right. Ball Q has velocity 0.50 ms⁻¹ to the left. P and Q collide with one another. The collision is perfectly elastic and the total momentum is conserved. Which diagram correctly shows the motion of P and Q after the collision?
A[Diagram A showing P moving left at 0.22 m s⁻¹ and Q moving right at 0.58 m s⁻¹]
B[Diagram B showing P moving left at 0.40 m s⁻¹ and Q moving right at 0.40 m s⁻¹]
C[Diagram C showing P moving left at 0.19 m s⁻¹ and Q moving right at 0.99 m s⁻¹]
D[Diagram D showing P moving left at 0.50 m s⁻¹ and Q moving right at 1.30 m s⁻¹]
✓ 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...
📋 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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