A-LevelPhysicsDynamicsOct/Nov 2024Paper 1 Q71 Mark
A moving object strikes a stationary object. The collision is inelastic. The objects move off together. Assume that the two objects form an isolated system. Which row shows the possible values of total momentum and total kinetic energy for the system before and after the collision?
Atotal momentum before collision /kgms⁻¹: 6, total momentum after collision /kgms⁻¹: 2, total kinetic energy before collision/J: 90, total kinetic energy after collision/J: 30
Btotal momentum before collision /kgms⁻¹: 6, total momentum after collision /kgms⁻¹: 6, total kinetic energy before collision/J: 30, total kinetic energy after collision/J: 90
Ctotal momentum before collision /kgms⁻¹: 6, total momentum after collision /kgms⁻¹: 6, total kinetic energy before collision/J: 90, total kinetic energy after collision/J: 30
Dtotal momentum before collision /kgms⁻¹: 6, total momentum after collision /kgms⁻¹: 6, total kinetic energy before collision/J: 90, total kinetic energy after collision/J: 90
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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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