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How fast is 274.750 kilometers per minute?

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It's about three-fifths as fast as The Space Shuttle.
In other words, 274.750 kilometers per minute is 0.591350 times the speed of The Space Shuttle, and the speed of The Space Shuttle is 1.6910 times that amount.
(Orbiter vehicle velocity)
The space shuttle orbits at a speed of 464.620 kilometers per minute. During liftoff, the space shuttle accelerates to orbital speed in 8.5 minutes, consuming over 1.59 million kg (3.51 million lbs) of propellant in the process.
It's about five times as fast as a Bullet (Rifle).
In other words, the speed of a Bullet (Rifle) is 0.20 times 274.750 kilometers per minute.
(5.56 x 45 mm, a.k.a. 5.56 NATO)
A 5.56 x 45 mm cartridge is fired at a velocity of 54.90 kilometers per minute. 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 seven times as fast as a Jet Fighter.
In other words, 274.750 kilometers per minute is 6.80 times the speed of a Jet Fighter, and the speed of a Jet Fighter is 0.150 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 40 kilometers per minute. The F-16 has a flight ceiling of approximately 15 km (9.32 mi).
It's about one-tenth as fast as a Meteor.
In other words, 274.750 kilometers per minute is 0.110 times the speed of a Meteor, and the speed of a Meteor is 9.10 times that amount.
(formally Meteoroid or meteorite, depending on the context; a.k.a. "shooting star", a.k.a. "falling star")
Small meteoroids enter the Earth's atmosphere at speeds between 670 kilometers per minute and 4,300 kilometers per minute, depending on their size. The fireball effect, known as ablation, ceases once the atmosphere has slowed the meteoroid to a velocity of about 170 kilometers per minute.
It's about twelve times as fast as a Bullet (Handgun).
In other words, 274.750 kilometers per minute is 11.90 times the speed of a Bullet (Handgun), and the speed of a Bullet (Handgun) is 0.084 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 23 kilometers per minute. This type of ammunition has been the standard issue round of the United States Federal Bureau of Investigation (FBI) since 1990.
It's about thirteen-and-a-half times as fast as The Speed of Sound.
In other words, the speed of The Speed of Sound is 0.0746 times 274.750 kilometers per minute.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 20.60 kilometers per minute. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 89.80 kilometers per minute to 93.60 kilometers per minute in water, depending on its salinity.
It's about one-twentieth as fast as a bolt of Lightning.
In other words, the speed of a bolt of Lightning is 21 times 274.750 kilometers per minute.
(atmospheric electrical discharge)
A bolt of lightning can travel at up to 5,800 kilometers per minute when arcing from the atmosphere to the Earth. An estimated 280 million lightning strikes strikes occur each year.