A-LevelPhysicsKinematics9702/12 · May/June 2012 · 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?

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A2h / t₂²

B2h / (t₂ + t₁)

C2h / (t₂ - t₁)²

D2h / (t₂² - t₁²)

✓ Correct answer

D: 2h / (t₂² - t₁²)

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Topic: Kinematics, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2012 Paper 1 Variant 2, question 8.

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