During a practice session, a sprinter runs along two straight track segments before stopping. The measured data are:
• First segment distance d1=(95.0±0.2)m
• Second segment distance d2=(104.0±0.3)m
• Total time taken t=(18.5±0.2)s
The average speed v is defined as v=td1+d2.
a. (i) Find the total distance covered with the correct significant figures.
b. (ii) Calculate the average speed and its percentage uncertainty, quoting the final answer with the appropriate significant figures and unit.