* The cannon itself doesn't move in a specific direction. When a cannon is fired, the force of the explosion propels the cannonball forward. The cannon will recoil (kick back) in the opposite direction of the cannonball's trajectory. However, the recoil is usually controlled by a carriage or other mounting system to prevent the cannon from moving too far.

* The cannonball's direction depends on how the cannon is aimed. The cannonball will travel in the direction the cannon is pointed.

To summarize:

* The cannonball goes in the direction the cannon is aimed.

* The cannon recoils in the opposite direction of the cannonball.