Physics (AS & A Level) · Oct / Nov 2025 · Paper 14 · Question 3

A stone is released from rest and falls vertically to the ground. The time taken to fall to the ground and the distance travelled are measured. The measurements are used to determine the acceleration of free fall. The percentage uncertainty in the measured time is 0.05%. The percentage uncertainty in the measured distance fallen is 0.6%. What is the percentage uncertainty in the calculated value of the acceleration of free fall?

1. A0.5%
2. B0.7%
3. C1.1%
4. D1.3%

As printed in the paper