Ev3 Catapult

This is an Ev3 catapult. It's going to shoot a plastic golf ball. We tried out several versions: Version 1. it just shoots the ball. But it didn't go very far so we made a version 2. What we added was gearwheels to change the speed to go fast. But results were very disappointing because it went just 1 inch farther:( . So we made a Version 3!!! It went really far:) and we made a really fun game to try to shoot the ball into several cups.