Question

Water drops are falling from a water tap at a regular interval of one second; such that when first drop reaches the ground, the fourth drop just leaves the water tap. Find height of water tap. [g = 10 m/s2]

Answer 1

Answer:

30m

Explanation:

when first drop reaches the ground, the fourth drop just leaves the water tap.

means there is 3 gaps to reach ground, 1 second is 10m, 2nd second is 20m

because during freefall, the water gain 10m/s of speed per second so

10+20=30

try drawing it urself, might let u understand deeper

Answer 2

Answer:

height will be at 45m from ground

Explanation:

when 1st drop reach the ground and 4th is just leaving the interval them is 3sec.

it means for any drop to reach the ground its required 3sec.

and initial velocity is zero

so s = 1/2gt^2