If a ball is thrown vertically upwards, at which point in its trajectory does it have the highest potential energy?

Potential energy: The energy stored as a result of a change in position relative to others, U=mgh [where m = mass of the body, g gravity-induced acceleration, h = distance from the ground].

Kinetic energy: Energy stored as a result of motion or momentum.

The ball has the highest potential energy at the highest point in its trajectory, which is the point where its velocity becomes zero and it briefly stops before it begins to fall back down due to the force of gravity. At this point, all the kinetic energy of the ball is converted into potential energy due to its position relative to the ground. As the ball falls back down, the potential energy is converted back into kinetic energy and its velocity increases until it reaches the ground.