1. The Green Machine By Jonathan Adams Brett Denton Zachery Ellis Joseph Selby

2. The Green Machine

3. Introduction  The project goal – to build a rollercoaster that last 15 seconds  We bought most of the materials at The Home Depot and Wal-Mart for about $20  The design is two small tubes held together by popsicle sticks and held up by Styrofoam which a marble rides

4. Energy  Initially the ball has potential energy as it is start from a height of 18 inches above the ground.  Once the ball begins rolling it has kinetic energy.  Mgh = 1/2mv^2 + Energy loss

5. Concepts used from class Concepts used from class  Projectile Motion – we could use the Trajectory to find the angle the ramp need to make the jump  Conservation of Energy – we could use the equation to find the speed at any given point  Circular motion – we could use to find the amount the curves needed to be banked

6. Conclusion  The building of the coaster took about 6 hours by all four members. The reports took about 3 hours.  Some problems we had: - Keeping the marble on the track - Keeping the marble on the track - banking the curves - banking the curves  WE ARE HAPPY NO MORE EF151