* Kinetic energy is the energy of motion. The faster an object moves, the more kinetic energy it has.

* At the moment of release, the ball has its highest velocity.

* As the ball travels upwards, gravity slows it down. The velocity decreases, and so does the kinetic energy.

* At the peak of its trajectory, the ball momentarily stops moving before falling back down. At this point, its kinetic energy is zero.

In summary: The ball's kinetic energy is maximized when it is moving the fastest, which occurs at the moment of release.