Science Struck
Science Struck: Rene Descartes: Facts, Achievements, Contributions
Presents biographical information about Rene Descartes (1596-1650), his career, personal life, written works, and his legacy. Covers contributions to philosophy, mathematics, and science.
NASA
Nasa: Beginner's Guide to Aerodynamics
Includes exhaustive information and a wealth of activities pertaining to aerodynamics and the physics of flight.
Khan Academy
Khan Academy: Elastic Collisions Review
Review the key concepts, equations, and skills for elastic collisions, including how to predict objects' final velocities.