Question

a stone is dropped from the roof of a building it takes 2s to reach the ground find the height of the building . ​

Answer 1

Answer:

this is a formula based question apply formula

Explanation:

G=Mm

d^2

Answer 2

Explanation:

The formula for time of flight is t=

g

2h

where h is the height from which ball is dropped.

since, t=4s

Putting the value in above formula,

4=

9.8

2h

h=7.84m