Answer. Posted on Wednesday, March 19, 2015.
When a smooth ball flies through air a boundary air layer separates from the ball’s surface and eddies form. There is a high air pressure at the front of the ball, but the air pressure at the back of the ball decreases. This difference in pressure creates a backward force.
The air around a dimpled ball slips off less and it significantly reduces the backward force. Thereby, a ball without dimples would not fly as far as a ball with dimples.