Question

A ball is released from the of the tower of height h meters. It takes t sec to reach ground.

Answer 1

Let the acceleration be 'g'

Then initial velocity = 0 m/s [in T seconds]

Let the distance be 'h' m.

We know,

Equation of motion:

s = ut + 1/2 gT²

Then,

h = 1/2gT² ......(1)

h1 = 1/2gT²/9'......(2)

Substitute (1) and (2):

We'll get h1 = h9

∴ The distance from ground is h-h/9 = 8h/9 ←(Answer)

Good Studies!