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How fast is 474 knots?

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It's about two-and-a-half times as fast as an Arrow (archery).
In other words, 474 knots is 2.7190 times the speed of an Arrow (archery), and the speed of an Arrow (archery) is 0.36780 times that amount.
(250 g arrow fired from 60#/28" bow)
A 250 gram arrow will reach speeds of approximately 174.30 knots when fired from a 60-lb, 28-inch draw bow . Archeological evidence from the Ahrensburg valley near Hamburg, Germany indicates that arrows have been used since at least 11 to 12,000 years ago.
It's about one-third as fast as a Jet Fighter.
In other words, the speed of a Jet Fighter is 2.80 times 474 knots.
(for Lockheed Martin F-16, a.k.a. Fighting Falcon, a.k.a. Viper) (maximum speed at altitude)
An F-16's maximum speed at altitude is approximately nan knots. The F-16 has a flight ceiling of approximately 15 km (9.32 mi).
It's about three times as fast as a Helicopter.
In other words, 474 knots is 3.09 times the speed of a Helicopter, and the speed of a Helicopter is 0.3240 times that amount.
(for AH-64A Apache, a.k.a. Hughes Model 77) (maximum cruise speed)
The AH-64 helicopter, one of the primary helicopters used by the United States Army, flies at a top cruise speed of 153 knots. The AH-64 is the primary military helicopter of several nations including the United States, the United Kingdom, Israel, Japan, and the Netherlands.
It's about three-and-a-half times as fast as a Skydiver (headfirst).
In other words, the speed of a Skydiver (headfirst) is 0.290 times 474 knots.
(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 140 knots. 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 one-fourth as fast as a Bullet (Rifle).
In other words, 474 knots is 0.2660 times the speed of a Bullet (Rifle), and the speed of a Bullet (Rifle) is 3.760 times that amount.
(5.56 x 45 mm, a.k.a. 5.56 NATO)
A 5.56 x 45 mm cartridge is fired at a velocity of 1,780 knots. As the NATO rifle cartridge, it is used by the military forces of more than thirty-one countries, including use in the M16 series, M4 Carbine, HK-416, and M249 Squad automatic weapons used by the United States armed forces.
It's about four-and-a-half times as fast as a Tornado.
In other words, 474 knots is 4.4167570 times the speed of a Tornado, and the speed of a Tornado is 0.22641050 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 95.587390 knots and 119.0497 knots. 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 four-and-a-half times as fast as a Skydiver (belly-to-earth).
In other words, the speed of a Skydiver (belly-to-earth) is 0.220 times 474 knots.
(Belly-to-Earth orientation, average conditions, terminal velocity)
A belly-to-Earth oriented skydiver's terminal velocity is about 100 knots. In a typical jump from 3,900 m (13,000 ft), a diver in this orientation will be in freefall for 60 seconds.