Water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap, the instant the first drop touches the ground. How far above the ground is the second drop at that instant. `(g = 10 ms^-2)`

Options

A. 2.50 m
B. 3.75 m
C. 4.00 m
D. 1.25 m

Answer

B

Explanation

Time taken by 1st drop to reach the ground
`t = sqrt((2h)/(g)) = sqrt((2xx5)/(10)) = 1sec`
As drop falls at regular intervals therefore time difference between any two drops ` = 1/2 sec`