Answer:
The time when the ball strikes the ground is closest to 
Explanation:
From the question we are told that
The time of projection is t = 0.0 s
The distance of the point from the ground is 
The initial velocity of the ball is 
generally the time required to reach maximum height is

Where is the acceleration due to gravity with value 
Substituting values


when returning the time and velocity at the roof level is t = 3.69 s and u = 36.2 m/s this due to the fact that air resistance is negligible
The final velocity at which it hit the ground is

So

substituting values


The time taken for the ball to move from the roof level to the ground is

substituting values


The total time for this travel is


