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