79.55/8.6=9.25
The answer is 9.25
Just differentiate it with time or with whatever respect you want ! mainly it is time !
Let the only force acting on the ball is the gravity (free-failing) and the ball was initially stationary
vo = 0
s = vot + 1/2 gt^2
s = 1/2 x 10 x (2.2) ^2 = 24.2 m
