The Los Angeles County Planning Department approves construction permits for the new first-of-its-kind roller coaster.

a brushless DC motor moves it along the track using a rack-and-pinion system. This means that technically this model isn’t a roller coaster, since the cart never makes a gravity-powered drop ...

As the motor pulls the cars to the top, lots of potential energy is built up. This is released when the roller coaster reaches the top. The amount of kinetic energy in the object depends on its ...