A-LevelPhysicsDynamicsMay/June 2016Paper 1 Q111 Mark
A ball of mass m travelling at velocity u collides with a stationary ball of mass M. After collision the two balls travel at velocities v and V respectively, in the directions shown. [Figure 11.1] A student writes three equations relating to the collision. Which row in the table indicates the correct and incorrect equations?
Amu = MV + mv: correct, mv sin 30° = MV sin 40°: correct, mv cos 30° + MV cos 40°: correct
Bmu = MV + mv: incorrect, mv sin 30° = MV sin 40°: correct, mv cos 30° + MV cos 40°: incorrect
Cmu = MV + mv: correct, mv sin 30° = MV sin 40°: incorrect, mv cos 30° + MV cos 40°: incorrect
Dmu = MV + mv: incorrect, mv sin 30° = MV sin 40°: correct, mv cos 30° + MV cos 40°: correct
✓ 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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