(a)[1]
Name the quantity that the student is measuring with the rule.
(b(i))[1]
On the line below each stopwatch, record the time, in seconds, measured by the student.
(b(ii))[2]
Calculate the average time between drops of water. Show your working.
(c)[3]
Calculate how many drops leave the tap in 15.5 minutes. Use your answer to part b(ii).