Created by Tom Henderson of Physics Classroom.com, this resource provides explanations and animations that explore the physics of roller coasters. It is designed as a tutorial for either teacher or learner to be used in conjunction with a unit on amusement park physics. The author uses free-body diagrams and detailed discussion to show how the force of gravity and the normal force act upon the roller coaster as it moves on a straight, curved, or looped track. A short self-test gauges user comprehension as well. This material is part of a larger collection.