A-LevelPhysicsKinematicsMay/June 2012Paper 1 Q81 Mark
Two markers M₁ and M₂ are set up a vertical distance h apart. [Figure 8.1] A steel ball is released at time zero from a point a distance x above M₁. The ball reaches M₁ at time t₁ and reaches M₂ at time t₂. The acceleration of the ball is constant. Which expression gives the acceleration of the ball?
A2h / t₂²
B2h / (t₂ + t₁)
C2h / (t₂ - t₁)²
D2h / (t₂² - t₁²)
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The correct answer is D. This question tests the candidate's understanding of kinematics 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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