A-LevelPhysicsPhysical quantities and unitsOct/Nov 2025Paper 1 Q41 Mark
A ball is released from rest. The distance the ball falls and the time the ball takes to fall that distance are both measured. The percentage uncertainty in the measured distance is negligible. The percentage uncertainty in the measured time is 4%. The distance and the time are then used to calculate the acceleration of free fall. Air resistance is negligible. What is the percentage uncertainty in the calculated value of the acceleration of free fall?
A2%
B4%
C8%
D16%
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of physical quantities and units 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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