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How fast is 1,380 kilometers per hour?

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It's about as fast as a Bullet (Handgun).
In other words, the speed of a Bullet (Handgun) is 1 times 1,380 kilometers per hour.
(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 1,380 kph. This type of ammunition has been the standard issue round of the United States Federal Bureau of Investigation (FBI) since 1990.
It's about one-and-one-tenth times as fast as The Speed of Sound.
In other words, 1,380 kilometers per hour is 1.12 times the speed of The Speed of Sound, and the speed of The Speed of Sound is 0.893 times that amount.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 343 m/s. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 5,390 kilometers per hour to 5,620 kilometers per hour in water, depending on its salinity.
It's about three-fifths as fast as a Jet Fighter.
In other words, 1,380 kilometers per hour is 0.57 times the speed of a Jet Fighter, and the speed of a Jet Fighter is 1.8 times that amount.
(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 2,400 kilometers per hour. The F-16 has a flight ceiling of approximately 15 km (9.32 mi).
It's about two-fifths as fast as a Bullet (Rifle).
In other words, 1,380 kilometers per hour is 0.419 times the speed of a Bullet (Rifle), and the speed of a Bullet (Rifle) is 2.39 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 3,294 kph. 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 three-and-a-half times as fast as a Peregrine Falcon.
In other words, 1,380 kilometers per hour is 3.55 times the speed of a Peregrine Falcon, and the speed of a Peregrine Falcon is 0.282 times that amount.
(a.k.a. Peregrine, a.k.a. Duck Hawk, Falco peregrinus)
The Peregrine Falcon can reach speeds of up to 389 kph 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 four times as fast as The CRH (train).
In other words, the speed of The CRH (train) is 0.25 times 1,380 kilometers per hour.
(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 350 kph. Theses train can make the 120 km (74 mi) journey from Beijing to Tianjin in about 30 minutes.
It's about four times as fast as a Porsche 911.
In other words, 1,380 kilometers per hour is 4.19 times the speed of a Porsche 911, and the speed of a Porsche 911 is 0.239 times that amount.
(for Porsche 911 Type 997 GT2, 2007 model)
The Porsche 911 GT2 has a top speed of 329 kph. It takes just 7.4 seconds for the GT2 to accelerate to 161 kilometers per hour.