By: Matthew Iannacone Brandon Waller Christopher Jones Sammy Akato One Ball & Two Cups By: Matthew Iannacone Brandon Waller Christopher Jones Sammy Akato

The Design Design consists of a spring launcher to launch a marble into a cup, which rotates and drops the marble onto a series of declining PVC tracks. There is a cup attached to a stamp on a hinged arm at the end of the last PVC track, which the marble knocks over ,stamping the paper.

Energy Used Spring -Elastic Potential Energy transferred to ball’s Kinetic Energy Ball -Gravitational Potential Energy decreases as Kinetic Energy increases First Cup -Conservation of momentum Ball, Stamp, and Cup

Construction Issues The biggest problem was getting the ball to shoot into the cup and turn it The other most significant problem was making sure the hinged arm functioned properly

Conclusions Our design successfully and consistently stamped the paper Practice makes perfect when dealing with projectile motion and targets Hinges can become stiff if screwed in too tightly Mouse traps with stamps attached are very effective (This is what everyone else did)