Physics (AS & A Level) · Oct / Nov 2020 · Paper 12 · Question 5

A steel ball is dropped and falls through a vertical height h. The time t taken to fall is measured using light gates. The results are given in the table. h: (4.05 ± 0.01) m t: (0.91 ± 0.02) s The acceleration of free fall g is calculated using the equation shown. h = ½gt² What is the percentage uncertainty in the value of g?

1. A2.4%
2. B4.6%
3. C5.1%
4. D9.3%

As printed in the paper