Question

a stone falls from building and reaches the ground 2.5 second later.calculate the height of building​

Answer 1

Answer:

The height of building is 30.625meters.

Explanation:

Initial velocity, u=0meter per second

Acceleration due to gravity, g=9.8meter per second square

Time taken to reach the ground, t=2.5 second

Height, h=?

Using relation

s=ut+1/2gt^2

s=0*2.5+1/2*9.8*2.5*2.5

s=0+4.9*2.5*2.5

s=30.625m