Question

A stone is dropped from the top of Kutub Minar .It takes 3.84 seconds to reach the ground. Calculate the height of Kutub Minar.( Take g = 9.8m/s2)

Answer 1

Answer:

Explanation:

By equation of motion

$S=ut + 0.5at^{2}$

Here;

S = Kutub Minar's height which is unknown

u = initial velocity = 0

a= g= 9.8   m/s2

t = time=3.84sec

By substituting the values and since u=0 then

$S=0.5gt^{2}=0.5*9.8*3.84^{2}=72.25344 m\approx 72.25 m$