Question

. A stone dropped from the roof of a building takes 4.0 sec to reach the ground. The height of the building is-*​

Answer 1

The height of the building is-*300 inch

Answer 2

Answer:

78.4 m

Explanation:

Initial Velocity (u)= 0 m/s

Time (t) = 4s

Acceleration (a) = 9.8 m/s^2

s = ut + 1/2 * a * t^2

  = 0 * 4 + 1/2 * 9.8 * 4 * 4  = 78.4 m