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How fast is 464 knots?

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It's about seven-tenths as fast as The Speed of Sound.
In other words, 464 knots is 0.6960 times the speed of The Speed of Sound, and the speed of The Speed of Sound is 1.440 times that amount.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 667 knots. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 2,910 knots to 3,030 knots in water, depending on its salinity.
It's about three-fifths as fast as a Bullet (Handgun).
In other words, 464 knots is 0.6220 times the speed of a Bullet (Handgun), and the speed of a Bullet (Handgun) is 1.610 times that amount.
(for .40 Smith & Wesson 135 grain Sierra JHP, VV 3N37 powder, Fed. 100 primer, Remington case) (muzzle velocity)
A 0.40 caliber Smith & Wesson bullet has a muzzle a velocity of 745 knots. This type of ammunition has been the standard issue round of the United States Federal Bureau of Investigation (FBI) since 1990.
It's about two times as fast as a Peregrine Falcon.
In other words, 464 knots is 2.210 times the speed of a Peregrine Falcon, and the speed of a Peregrine Falcon is 0.4520 times that amount.
(a.k.a. Peregrine, a.k.a. Duck Hawk, Falco peregrinus)
The Peregrine Falcon can reach speeds of up to 210 knots when diving. Falcons are sometimes sent to scare smaller birds away from airports to improve air traffic safety and were used in World War II to intercept carrier pigeons used by enemy forces.
It's about two-and-a-half times as fast as The CRH (train).
In other words, the speed of The CRH (train) is 0.40 times 464 knots.
(a.k.a. Hexie Hao, 和谐号, a.k.a. 和諧號, a.k.a. Héxié Hào, a.k.a. "Harmony")
The CRH-3 train which runs on China's Beijing-Tianjin Intercity Railway are capable of speeds up to 190 knots. Theses train can make the 120 km (74 mi) journey from Beijing to Tianjin in about 30 minutes.
It's about two-and-a-half times as fast as a Porsche 911.
In other words, 464 knots is 2.610 times the speed of a Porsche 911, and the speed of a Porsche 911 is 0.3830 times that amount.
(for Porsche 911 Type 997 GT2, 2007 model)
The Porsche 911 GT2 has a top speed of 178 knots. It takes just 7.4 seconds for the GT2 to accelerate to 86.90 knots.
It's about two-and-a-half times as fast as an Arrow (archery).
In other words, 464 knots is 2.6620 times the speed of an Arrow (archery), and the speed of an Arrow (archery) is 0.37570 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 two-and-a-half times as fast as a Lamborghini Gallardo.
In other words, the speed of a Lamborghini Gallardo is 0.370 times 464 knots.
(for Gallardo LP 550-2, a.k.a. Valentino Balboni, 2009 model)
The Lamborghini Gallardo LP550-2 model Gallardo has a top speed of 170 knots. The Gallardo can reach speeds of 54 knots in just 3.9 seconds.