A person throws a ball up into the air. At which point in its path will the ball have the greatest potential energy?

when the ball leaves the person’s hand
when the ball hits the ground
when the ball is still rising
when the ball reaches its highest point

The ball will have the greatest potential energy at its highest point. As the ball is thrown up into the air, its potential energy increases as it gains height. At the highest point of its trajectory, the ball reaches its maximum potential energy.