Created by Tom Henderson of Physics Classroom.com, this page features an animated roller coaster with two loops. Energy bar graphs show the transformation of energy from potential to kinetic as the roller coaster descends the initial hill. As the car continues on the track, users can visualize how kinetic energy is dependent upon an object's mass and its speed. This animation is an example of a system in which TME (Total Mechanical Energy) remains the same during the course of the motion. This lesson is part of a collection of online tutorials for high school physics students.