Sports

How the Physics of Football Works
There's a reason why some passes miss their target, and others land right in the receiver's hands. Offers a view of the game from different angle.
http://science.howstuffworks.com/physics-of-football.htm

The Physics of Soccer
Discusses shape of a soccer ball, spin effects, motion of projectiles.
http://www.soccerballworld.com/Physics.htm

Principles of Aeronautics
Discusses the physics of sports involving aerodynamics, including tennis, golf, baseball, javelin, discus, frisbee, boomerangs, bicycling, race cars, sailboats, and swimming.
http://wings.avkids.com/Book/Sports/

Slam Dunk Science
Sport research lab in the science classroom. Offers a look at shoe design, lab tools, and activities.
http://www.scire.com/sds/sdsmenu.html

Sport Science at Exploratorium
Examines the most popular team and recreational sports, including baseball, cycling, skateboard, and hockey. Also includes highlights on bouncing balls, rock climbing, and facts.
http://www.exploratorium.edu/sports/

Why Does a Golf Ball Have Dimples?
An article describing the history and aerodynamics of a golf ball.
http://wings.avkids.com/Book/Sports/instructor/golf-01.html