College Physics. Projectile Motion?

Regardless of the horizontal velocity, the ball falls at the same rate as if you where dropping it. The same is true of a bullet, so you have to compensate for the distance when you set your sights. This is the point of the famous falling monkey demonstration and Newton's firing a cannon ball from a high mountain with the correct barrel velocity to form a circular orbit. The problem here is that when a Major League pitcher throws a ball he uses the laces and spin to cause even his fastball to move. If you threw a fastball that went straight then the fans in the cheap seats would get a lot of free souvenir home-run .