Strictly this Problem's solution is not actually about gravity, it is about a constant downwards force (the ball's time-independent path does not depend on the magnitude of the force, only direction). The phrasing for the solution is a shorthand that takes advantage of human physical intuition.

Strictly the solution is not about gravity, it is about a constant downwards force (the ball's time-independent path does not depend on the magnitude of the force, only direction). The phrasing for the solution is a shorthand for this that take advantage of human physical intuition.

Strictly the solution is not about gravity, its about a constant downwards force (the ball's time-independent path will remain the same regardless of the magnitude of the force as long as it's pointed downwards). The phrasing for the solution is shorthand for this, taking advantage of human physical intuition.

Ball will reach edge of bounding box under gravity vs. not so.

Leo Crabbe