A cannonball shot in space would not experience air resistance, allowing it to maintain its speed indefinitely until it impacts an object. The lack of atmosphere means that the impact force would be the same as on Earth, but the absence of gravity would affect the trajectory. Pain from a cannonball impact would be severe regardless of location, as the injury would be due to the force of the impact rather than environmental factors. The discussion highlights that while the physical effects of the impact remain consistent, the experience of pain could differ based on the context of the environment. Ultimately, the fundamental danger of being hit by a cannonball remains unchanged in both scenarios.