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How fast is 580,000,000 furlongs per fortnight?

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It's about as fast as a bolt of Lightning
In other words, the speed of a bolt of Lightning is 1 times 580,000,000 furlongs per fortnight.
(atmospheric electrical discharge)
A bolt of lightning can travel at up to 580,000,000 furlongs per fortnight when arcing from the atmosphere to the Earth. An estimated 280 million lightning strikes strikes occur each year.
It's about two-and-a-half times as fast as a Meteor
In other words, the speed of a Meteor is 0.430 times 580,000,000 furlongs per fortnight.
(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 67,000,000 furlongs per fortnight and 430,000,000 furlongs per fortnight, depending on their size. The fireball effect, known as ablation, ceases once the atmosphere has slowed the meteoroid to a velocity of about 17,000,000 furlongs per fortnight.
It's about twelve-and-a-half times as fast as The Space Shuttle
In other words, 580,000,000 furlongs per fortnight is 12.4570 times the speed of The Space Shuttle, and the speed of The Space Shuttle is 0.080276 times that amount.
(Orbiter vehicle velocity)
The space shuttle orbits at a speed of 46,561,000 furlongs per fortnight. 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 100 times as fast as a Bullet (Rifle)
In other words, 580,000,000 furlongs per fortnight is 105 times the speed of a Bullet (Rifle), and the speed of a Bullet (Rifle) is 0.00952 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 5,500,000 furlongs per fortnight. 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 150 times as fast as a Jet Fighter
In other words, the speed of a Jet Fighter is 0.0071 times 580,000,000 furlongs per fortnight.
(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 4,000,000 furlongs per fortnight. The F-16 has a flight ceiling of approximately 15 km (9.32 mi).
It's about 250 times as fast as a Bullet (Handgun)
In other words, 580,000,000 furlongs per fortnight is 251 times the speed of a Bullet (Handgun), and the speed of a Bullet (Handgun) is 0.00398 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 2,300,000 furlongs per fortnight. This type of ammunition has been the standard issue round of the United States Federal Bureau of Investigation (FBI) since 1990.
It's about 300 times as fast as The Speed of Sound
In other words, 580,000,000 furlongs per fortnight is 281 times the speed of The Speed of Sound, and the speed of The Speed of Sound is 0.00356 times that amount.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 2,060,000 furlongs per fortnight. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 9,000,000 furlongs per fortnight to 9,380,000 furlongs per fortnight in water, depending on its salinity.