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Speed is the magnitude of velocity (a vector), which indicates additionally the direction of motion. Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph).
It is used in many sports that incorporate running, typically as a way of quickly reaching a target or goal, or avoiding or catching an opponent. Human physiology dictates that a runner's near-top speed cannot be maintained for more than 30–35 seconds due to the depletion of phosphocreatine stores in muscles, and perhaps secondarily to ...
Footspeed, or sprint speed, is the maximum speed at which a human can run. It is affected by many factors, varies greatly throughout the population, and is important in athletics and many sports. Air resistance for top sprinters can take up to 5% of their energy. [85]
Sprinting is a sport that requires development of footspeed.. Footspeed, or sprint speed, is the maximum speed at which a human can run. It is affected by many factors, varies greatly throughout the population, and is important in athletics and many sports, such as association football, Australian rules football, American football, track and field, field hockey, tennis, baseball, and basketball.
Sport is generally recognised as system of activities based in physical athleticism or physical dexterity, with major competitions admitting only sports meeting this definition. [3] Some organisations, such as the Council of Europe, preclude activities without any physical element from classification as sports. [2]
Speed flying/riding is a hybrid sport that combines elements of paragliding, parachuting and freeriding to create a new sport. Like paragliding, speed flying is done by launching from a slope with the wing overhead, already inflated by the incoming air.
The International Skating Union (ISU), the governing body of competitive ice sports, refers to long track as "speed skating" and short track as "short track skating". Long track speed skating takes place on a 400m ice track, while short track takes place on a 111m track. An international federation was founded in 1892, the first for any winter ...
Sport stacking, also known as cup stacking or speed stacking, is an individual and team sport that involves stacking 9–12 specially designed cups in predetermined sequences as quickly as possible. The cups are specially designed with holes to allow for air to pass through.