Lab Group: Thomas Echelberger, Austin Brown, Erik Holden, and Josh Peeples Introduction: For this lab we had to construct a projectiles launcher that would shoot ping pong balls at different distances. At the beginning of the project we though of doing a generic catapult made of popsicle sticks. But we wanted to go above and beyond. So we decided to make a launcher that would use air pressure to power the ping pong ball. Which started our process through the scientific method. We first started our research by thinking of different ways to use the air pressure to our advantage. First we thought of how potato cannons work but we realized that would be too big and dangerous. So we concluded on PVC pipe and a bicycle pump. Procedure: First