When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball? (Do you see why long-range cannons have such long barrels?)

Question

When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance.  What effect does this have on the velocity of the emerging cannonball? (Do you see why long-range cannons have such long barrels?)

Steve · Answer

what effect can it possibly have? increase decrease unaffected The very language of the question gives away the answer.