Water drops fall at regular interval from tap which is 5 m above the ground . The third drop is leaving the tap at the instant first drop touches the ground . How far above the ground is the second drop at that instant.

Question

$\begin{array}{1 1} (a) \;2.5\;m \\ (b) \;3.75\;m \\ (c) \;4.00\;m \\ (d) \;1.25\;m\end{array}$