A-LevelPhysicsPhysical quantities and units9702/12 · Oct/Nov 2023 · Q31 Mark

A student takes measurements to determine the constant acceleration of a model car moving from rest in a straight line. The measured values with their absolute uncertainties are shown. [Table of quantities, measured values and uncertainties] The student uses the equation s = ½at² to calculate the acceleration of the car. What is the acceleration and its absolute uncertainty?

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A(0.11 ± 0.01) m s⁻²

B(0.11 ± 0.02) m s⁻²

C(0.15 ± 0.01) m s⁻²

D(0.15 ± 0.02) m s⁻²

✓ Correct answer

D: (0.15 ± 0.02) m s⁻²

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2023 Paper 1 Variant 2, question 3.

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