Answer
a. 4%
b. 0.4%
c. 0.06%
Work Step by Step
a. Percentage uncertainty = $\frac{0.2 s}{5.5 s} \times 100 \%=4 \%$
b. Percentage uncertainty = $\frac{0.2 s}{55 s} \times 100 \%=0.4 \%$
c. Percentage uncertainty = $\frac{0.2 s}{330 s} \times 100 \%=0.06 \%$
