Roller Coaster Physics

Tomorrow I'm taking my oldest daughter to Storyland for a daddy-daughter hangout day before she starts Kindergarten in a few weeks. Her favorite ride is the Polar Coaster which is a roller coaster that is perfect for kids her age (and for 40-something dads who can't really handle big roller coasters anymore).  Thinking about the Polar Coaster got me to look in my archives for some resources for teaching and learning about the physics of roller coasters. Unfortunately, everything that I...