I am very satisfied with our progress so far. We have completed three changes in direction for the rollercoaster and three changes for the Rube Goldberg. Inertia wants to keep the marble moving straight so when the marble has to take small turns, it falls off of the coaster. The camel hump on our rollercoaster has been frustrating because the marble keeps slowing down. It is because it doesn't have a lot of energy to keep moving past the hump. Our Rube Goldberg part of ther project has been working well. The marble is making it through the cup, the ramp and the dominos.
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