Adam Hocherman has been making toys since 2008, but up until now, the products have been designed for young children. When he sold his company's line of Onaroo toys to a Wisconsin firm last year, it ...

Roller coasters rely on two types of energy to operate: gravitational potential energy and kinetic energy. Gravitational potential energy is the energy an object has stored because of its mass and its ...

Introduction Have you ever ridden a roller coaster? Have you ever wanted to design your own? There are plenty of expensive toys and even video games that will let you build your own coasters—but in ...