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How fast is 350,000 kilometers per hour?

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It's about 1,500 times as fast as a Skydiver (headfirst)
In other words, the speed of a Skydiver (headfirst) is 0.00071 times 350,000 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 2,000 times as fast as a Tornado
In other words, 350,000 kilometers per hour is 1,760.9710 times the speed of a Tornado, and the speed of a Tornado is 0.0005678685 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 2,000 times as fast as a Skydiver (belly-to-earth)
In other words, 350,000 kilometers per hour is 1,800 times the speed of a Skydiver (belly-to-earth), and the speed of a Skydiver (belly-to-earth) is 0.00056 times that amount.
(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 2,500 times as fast as a Fastball (baseball)
In other words, the speed of a Fastball (baseball) is 0.00042 times 350,000 kilometers per hour.
(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 3,000 times as fast as a Curveball (baseball)
In other words, 350,000 kilometers per hour is 2,900 times the speed of a Curveball (baseball), and the speed of a Curveball (baseball) is 0.00034 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 3,000 times as fast as a Hurricane
In other words, 350,000 kilometers per hour is 2,940 times the speed of a Hurricane, and the speed of a Hurricane is 0.00034 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 one-three-thousandth as fast as The Speed of Light
In other words, 350,000 kilometers per hour is 0.00032429842588709 times the speed of The Speed of Light, and the speed of The Speed of Light is 3,083.5795680 times that amount.
(C) (in a vacuum)
The speed of light (and all other electromagnetic radiation) in a perfect vacuum is known as "c" and measures 1,079,252,848.80 kilometers per hour, per the formal definition of the meter. While visible light travels close to this speed in air, it slows to 719,501,899.2120 kilometers per hour when passing through the glass of a typical window.