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How fast is 10,000 kilometers per hour?

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It's about forty times as fast as a Skydiver (headfirst)
In other words, the speed of a Skydiver (headfirst) is 0.026 times 10,000 kilometers per hour.
(Head-to-Earth orientation or standing, average conditions, terminal velocity)
A head-to-Earth or standing-oriented skydiver's terminal velocity assuming average conditions is about 260 kph. In a typical jump from 3,900 m (13,000 ft), a diver in this orientation will be in freefall for 46 seconds.
It's about 50 times as fast as a Tornado
In other words, 10,000 kilometers per hour is 50.313460 times the speed of a Tornado, and the speed of a Tornado is 0.0198754 times that amount.
(EF2) (wind speed range average)
According to the Enhanced Fujita scale implemented by the US National Oceanographic and Atmospheric Administration, a "significant" tornado has an Enhanced Funjita scale classification of EF2 and is characterized by wind gust speeds between 177.02784 kph and 220.480128 kph. The largest recorded tornado — an F4 event occurring in Nebraska in May, 2004 — was almost 4.02 km (2.5 mi) across.
It's about 50 times as fast as a Skydiver (belly-to-earth)
In other words, the speed of a Skydiver (belly-to-earth) is 0.019 times 10,000 kilometers per hour.
(Belly-to-Earth orientation, average conditions, terminal velocity)
A belly-to-Earth oriented skydiver's terminal velocity is about 190 kph. In a typical jump from 3,900 m (13,000 ft), a diver in this orientation will be in freefall for 60 seconds.
It's about 70 times as fast as a Fastball (baseball)
In other words, 10,000 kilometers per hour is 68 times the speed of a Fastball (baseball), and the speed of a Fastball (baseball) is 0.015 times that amount.
(a.k.a. rising fastball, a.k.a. cross-seam fastball, a.k.a. heater, a.k.a. hummer, a.k.a. smoker; for four-seam grip) (major league average)
The average speed of major league fastball pitch is 150 kph. When up against the quickest professional fastball pitchers, a batter may have less than 0.4 seconds to react to a pitched ball.
It's about 80 times as fast as a Curveball (baseball)
In other words, 10,000 kilometers per hour is 82 times the speed of a Curveball (baseball), and the speed of a Curveball (baseball) is 0.012 times that amount.
(a.k.a. hook, a.k.a. hammer, a.k.a. yakker) (major league average)
The average speed of major league curveball pitch is 120 kph. In the 1940's, debate over whether there really was a curve in the curveball pitch was settled with the conclusion that the ball does curve; however, an optical illusion caused by the spin of the ball and the batter's perception of motion exaggerates the extent of the curve.
It's about 85 times as fast as a Hurricane
In other words, 10,000 kilometers per hour is 83.90 times the speed of a Hurricane, and the speed of a Hurricane is 0.0119 times that amount.
(formally: Topical cyclone; a.k.a. typhoon)
A hurricane is defined by the US National Hurricane Center as a Northern Hemisphere tropical storm having one-minute average wind-speeds of at least 119 kph. Typhoons Tip (October, 1979) and Keith (October, 1997) and Hurricanes Camille (August, 1969) and Allen (August, 1980) jointly hold the record for highest tropical storm wind speeds at 310 kph (192.63 mph).
It's about 90 times as fast as a Cheetah
In other words, 10,000 kilometers per hour is 90.510 times the speed of a Cheetah, and the speed of a Cheetah is 0.01105 times that amount.
(Acinonyx jubatus)
The cheetah can reach speeds of up to 101 - 120 km/h in short bursts. From a crouching position, the cheetah can attain these speeds in just 2.25 seconds.