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Speed skydiving : ウィキペディア英語版 | Speed skydiving
Speed Skydiving is a type of skydiving in which the goal is to achieve and maintain the highest possible terminal velocity. It was developed in the mid 2000s and is the fastest non-motorized sport on Earth. The speed achieved by the human body in free fall is a function of several factors, including the body's mass, orientation, and skin area and texture.〔While none of these matter in free fall in the absence of friction by Newton's Laws, they are significant when dealing with air resistance.〕 In stable, belly-to-earth position, terminal velocity is about 200 km/h (120 mph). Stable freefall head down position has a terminal speed of 240–290 km/h (around 150–180 mph). Further minimization of drag by streamlining the body allows for speeds in the vicinity of 480 km/h (300 mph). ==Competition==
Participants compete for the best Meet Result and attempt set World Record. A Meet Result is made up of 3 jumps from “regular” skydiving altitude : 4,000 meters (13,124 ft). Meet Results and World Records can only be set during a sanctioned ISSA competition.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Speed skydiving」の詳細全文を読む
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