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The long jump is a track and field event in which athletes combine speed, strength and agility in an attempt to leap as far as possible from a takeoff point. Along with the triple jump , the two events that measure jumping for distance as a group are referred to as the "horizontal jumps".
The optimal take off angle for a standing long jump (performed by a human) has been theoretically calculated to be ~22.6°, [7] substantially lower than the optimal take off angle for a projectile (i.e. 45°). [8] This is due to take-off speed decreasing with take-off angle due to the jumper's body configuration. [7]
Due to a tailwind helping to enhance the speed of the athlete in events like certain sprint races (100 and 200 metres), 100/110 metres hurdles, the triple jump and the long jump, there is a limit to how much wind assistance the athlete may compete under if the performance is to establish a record.
The device used is known as a vertical jump tester. A vertical jump or vertical leap is the act of jumping upwards into the air. It can be an exercise for building both endurance and strength, and is also a standard test for measuring athletic performance. [1] It may also be referred to as a Sargent jump, named for Dudley Allen Sargent.
The IAAF considers marks set at high altitude as acceptable for record consideration. However, high altitude can significantly assist long jump performances. At the 1968 Summer Olympics in Mexico City, Bob Beamon broke the existing record by a margin of 55 cm (21 + 1 ⁄ 2 in), and his world record of 8.90 m (29 ft 2 + 1 ⁄ 4 in) stood until Mike Powell jumped 8.95 m (29 ft 4 + 1 ⁄ 4 in) in ...
The women's long jump was introduced over fifty years later in 1948, and was the second Olympic jumping event for women after the high jump, which was added in 1928. The Olympic records for the event are 8.90 m ( 29 ft 2 + 1 ⁄ 4 in) for men, set by Bob Beamon in 1968, and 7.40 m ( 24 ft 3 + 1 ⁄ 4 in) for women, set by Jackie Joyner-Kersee ...
A 2019 meta-analysis found no positive effect of sugar consumption on mood but did find an association with lower alertness and increased fatigue within an hour of consumption, known as a sugar crash. [363] Sugar can however lead to jump in blood sugar levels, causing temporary hyperactivity even if it does not cause clinical hyperactivity. [364]
This unphysical behavior, known as a "noncollision singularity", [58] depends upon the masses being pointlike and able to approach one another arbitrarily closely, as well as the lack of a relativistic speed limit in Newtonian physics. [66] It is not yet known whether or not the Euler and Navier–Stokes equations exhibit the analogous behavior ...