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How fast is 123 inches per hour?

It's about one-eighty-five-thousandth as fast as a Skydiver (headfirst)
The speed of a Skydiver (headfirst) is about 10,000,000 inches per hour.
(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 10,000,000 inches per hour. 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-sixty-five-thousandth as fast as a Tornado
The speed of a Tornado is about 7,824,960 inches per hour.
(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 6,969,600 inches per hour and 8,680,320 inches per hour. 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 one-sixty-five-thousandth as fast as a Skydiver (belly-to-earth)
The speed of a Skydiver (belly-to-earth) is about 7,500,000 inches per hour.
(Belly-to-Earth orientation, average conditions, terminal velocity)
A belly-to-Earth oriented skydiver's terminal velocity is about 7,500,000 inches per hour. In a typical jump from 3,900 m (13,000 ft), a diver in this orientation will be in freefall for 60 seconds.
It's about one-fifty-thousandth as fast as a Fastball (baseball)
The speed of a Fastball (baseball) is about 5,800,000 inches per hour.
(a.k.a. rising fastball, a.k.a. cross-seam fastball, a.k.a. heater, a.k.a. hummer, a.k.a. smoker; for four-seam grip) (major league average)
The average speed of major league fastball pitch is 5,900,000 inches per hour. When up against the quickest professional fastball pitchers, a batter may have less than 0.4 seconds to react to a pitched ball.
It's about one-forty-thousandth as fast as a Curveball (baseball)
The speed of a Curveball (baseball) is about 4,800,000 inches per hour.
(a.k.a. hook, a.k.a. hammer, a.k.a. yakker) (major league average)
The average speed of major league curveball pitch is 4,700,000 inches per hour. In the 1940's, debate over whether there really was a curve in the curveball pitch was settled with the conclusion that the ball does curve; however, an optical illusion caused by the spin of the ball and the batter's perception of motion exaggerates the extent of the curve.
It's about one-forty-thousandth as fast as a Hurricane
The speed of a Hurricane is about 4,690,000 inches per hour.
(formally: Topical cyclone; a.k.a. typhoon)
A hurricane is defined by the US National Hurricane Center as a Northern Hemisphere tropical storm having one-minute average wind-speeds of at least 4,690,000 inches per hour. Typhoons Tip (October, 1979) and Keith (October, 1997) and Hurricanes Camille (August, 1969) and Allen (August, 1980) jointly hold the record for highest tropical storm wind speeds at 12,200,000 inches per hour.
It's about one-thirty-five-thousandth as fast as a Cheetah
The speed of a Cheetah is about 4,350,000 inches per hour.
(Acinonyx jubatus)
The cheetah can reach speeds of up to 4,350,000 inches per hour in short bursts. From a crouching position, the cheetah can attain these speeds in just 2.25 seconds.
It's about one-thirty-five-thousandth as fast as a Knuckleball (baseball)
The speed of a Knuckleball (baseball) is about 4,300,000 inches per hour.
(a.k.a. knuckler, a.k.a. floater, a.k.a. dancer, a.k.a. butterfly ball) (major league average)
The average speed of major league knuckleball pitch is 4,300,000 inches per hour. Eddie Cicotte, who was later implicated in the 1919 Black Sox scandal, is credited with developing the pitch ca. 1906.
It's about one-twenty-five-thousandth as fast as a Gazelle
The speed of a Gazelle is about 3,000,000 inches per hour.
(for Thomson's Gazelle, a.k.a. Eudorcas thomsoni, a.k.a. "Tommie", a.k.a. "Tommy")
A Thomson's gazelle can reach speeds of up to 3,000,000 inches per hour. The gazelle's speed doesn't match that of its chief predator, the cheetah, but a gazelle's endurance usually ensures an escape in distances greater than 500 m (0.3 mi).
It's about one-twenty-five-thousandth as fast as a Hare
The speed of a Hare is about 3,000,000 inches per hour.
(for European Brown Hare, a.k.a. Brown Hare, a.k.a. Lepus europaeus, a.k.a. Brown Hare)
The European Hare can run at speeds of up to 3,000,000 inches per hour. While speed is a factor in their escapes, hares evade their chief predators — wolves, foxes, and golden eagles — by fleeing in a zigzag pattern.
It's about one-twenty-five-thousandth as fast as a Greyhound
The speed of a Greyhound is about 2,850,000 inches per hour.
(a.k.a. English greyhound) (approximate maximum speed)
Greyhounds reach average race speeds of 2,850,000 inches per hour. Despite their racing prowess, greyhounds are not considered energetic dogs — the typical greyhound race requires the dogs to run for less than 35 seconds.
It's about one-twenty-thousandth as fast as Secretariat
The speed of Secretariat is about 2,380,000 inches per hour.
(at Belmont Stakes, 1973)
Setting a record finish, Secretariat ran the Belmont Stakes — a 12 furlong race length — in 2:24, for an average speed of 2,380,000 inches per hour in 1973. His margin of victory in the race, also a record-setter, was 31 lengths.
It's about one-ten-thousandth as fast as Michael Johnson
The speed of Michael Johnson is about 1,467,000 inches per hour.
(a.k.a. Michael Duane Johnson) (sprinter; 1967-) (at the Atlanta Olympics, 1996)
Setting a record that stood for 12 years, Michael Johnson ran a 200 m in 0:19.32 for an average speed of 1,467,000 inches per hour at the 1996 Olympics. Johnson was nicknamed "the Man with the Golden shoes" in recognition of the custom footwear worn during these races — a pair of Nikes with a left size of 10.5 and a right size of 11.
It's about one-ten-thousandth as fast as Usain Bolt
The speed of Usain Bolt is about 1,460,000 inches per hour.
(at the Beijing Olympics, 2008) (a.k.a. Usain St. Leo Bolt, OJ, C.D.) (sprinter; 1986-)
Setting a world record, Usain Bolt ran a 100 m in 0:09.69 for an average speed of 1,460,000 inches per hour at the 2008 Olympics. Furthermore, Bolt's margin of record breaking — 0.03 s — is the largest margin of victory in the history of digital measurements.
It's about one-ten-thousandth as fast as Flo-Jo
The speed of Flo-Jo is about 1,328,000 inches per hour.
(at the Seoul Olympics, 1998) (a.k.a. Florence Griffith-Joyner, a.k.a. Florence Delorez Griffith) (swimmer; 1959-1998)
Setting a world record in 1988, Flo-Jo ran a 200 m in 0:21.34 for an average speed of 1,328,000 inches per hour. Known as a 200 m runner, Joyner also set a record time in a 100 m race at in 1987.
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