Question

A stone Falls from a building and reaches the
ground 25 seconds later . How high is the
building ? (g = 9.8m/s square
​

Answer 1

Answer:

Step-by-step explanation:

Initial velocity, u = 0 m/s

Acceleration due to gravity, g=9.8 m/s

2

Time taken to reach the ground, t = 2.5 sec

Height, h = ?

Using relation,

S=ut + 1/2gt²

S=0×2.5 +1/2 ×9.8×2.5×2.5

s=0+4.9×2.5×2.5

s = 30.625 m