Answer:
The greatest force of gravity on the ball will occur at the point when the ball is near to hit the ground.
Step-by-step explanation:
As we know that the earth's center attracts everything towards its center with an acceleration of 9.8 m/s² so it simply means that the change in velocity must occur to produce acceleration. When the ball comes towards the earth, its speed contineously increases and it is at maximum level when it is about to hit the ground so this is the point where gravitational force is maximum.