Roller Coaster Rock (or not)

In science class, we're working on a project with physics. My group is building a roller coaster. We must have 5 (I believe) aspects of a roller coaster exhibited. We have to buy all our supplies with Omega $$. To earn this, well, there's many ways to earn it. Anyway, back to building. We have to use Newton's laws to construct our coaster, like real engineers. Do you know Newton's laws? They're 3 very interesting facts. They are-

1- An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an unbalanced force.

2- F=ma, or Force = Mass x Acceleration

3- Every action has an equal and opposite reaction

I found a site that can simulate building a roller coaster, just like what we're doing in class, but it's online. That's not very fair... online vs. the fun of building it yourself. But the site does include links to definitions to words-

Acceleration
Centripetal Force
Energy
Force
g's
Inertia
Momentum
Sir Isaac Newton
Velocity
Weightlessness
Weight
Work

This can help anyone confused. I read almost all the definitions! Also, here is an interactive guide to Newton's Laws. The games are fun, and they really help reinforce what has been learned in class. I learned all about Newton's Laws, and I think they're very important to life. If we didn't know about the laws, we wouldn't have many rides at amusement parks or many other things due to a lack of knowledge of physics.