Roller Coasters Work
the beginning the cars are pulled to the top of the first hill. After
the coaster has to complete the ride on its own. You are not being
around by a motor or pulled by a hitch. The conversion of
potential energy to Kinetic energy is what drives the roller coaster.
All of the potential energy you need is present once the coaster ascends the first hill.
Once you're moving, different types of
wheels help keep the ride smooth. Running wheels guide the
coaster on the track, friction wheels control lateral motion and
final set of wheels keeps the coaster on the track even if it's upside down.