Other
Brilliant: Conservation of Energy
Discusses conservation of energy, and explains what kinetic energy is, some kinds of potential energy, and how work and energy are related using the work-kinetic energy theorem. Provides lots of examples along with calculations.
Physics Classroom
The Physics Classroom: Basic Terminology and Concepts: Kinetic Energy
In this site from the physics classroom, kinetic energy is defined and discussed. The equation for its computation is also given and practice computation problems are given.