A higher arc can turn a difficult shot into a more forgiving one, even though the ball travels farther. The advantage lies at the rim. As the ball descends more steeply, the opening presents a wider target along the direction of travel, leaving more room to clear its front and back edges.
The geometry favors descent. Viewed along a shallow trajectory, the circular rim looks compressed into a narrow ellipse; viewed from closer to directly above, it appears more nearly circular. An 18-inch rim must accommodate a ball roughly 9.4 inches across, so the extra clearance matters. A shot that arrives too flat can strike iron even when its aim is otherwise sound. Gravity supplies the downward acceleration that bends the ball's flight, while its release speed and angle determine the trajectory.
More height is not always better. A very high shot generally requires more launch speed or flight time, giving small errors in release and aim more opportunity to matter. A defender's reach, the shooter's distance and the speed of a possession also shape the choice. Teammates create space; a shooter must use it. The best arc is one that combines a useful entry angle with a motion the player can repeat under pressure. Above the rim, the ball hangs for an instant between the generosity of geometry and the demands of control.
