A heavy object is dropped From a vertical height of 8.0 m. What is it's spend when it hits the ground?

Final speed of the ball = Vf = 12.52 m/s when it hits the ground

Explanation:

Height = S = 8.0 m

Initial Velocity = Vi = 0 m/s

Final Velocity = Vf = ?

Acceleration due to gravity = a=9.8m/s²

Using Newtons third equation of motion

2as = Vf² - Vi²

2 (9.8) 8 = Vf² - 0

156.8 = Vf²

Vf=√156.8 = 12.52m/s

Final Speed of the ball is 12.52 m/s