Friday, September 20, 2019

Physics of Hacky Sac Essay -- physics sport sports footbag

History Hackey Sac, or Footbag as it is commonly called, has only recently become a sport. Versions of the activity have existed in Chinese, Native American, Thai, and other cultures for hundreds of years; however, a formal structure for the sport was not adopted until 1972 when John Stalberger and Mike Marshall created the format used today. Hackey Sac now falls into one of two categories: freestyle and net footbag. Freestyle, like that of other sports, consists of a routine of difficult tricks completed in succession with a maxiumum number of difficult tricks performed in a minimal time. Net footbag resembles volleyball in its use of a net (although only only raised to a height of 5 feet), except instead of manipulating the "ball" with hands, players use their feet. The topics discussed in these pages will focus on the freestyle elements of footbag rather than net due to the more complex motions involved in freestyle. Purpose Hacky Sac, like most sports, consists of properly applying physics concepts with physical performance. Logically it follows that some "tricks" are ...

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