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How fast is 872.1 inches per second?

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It's about as fast as a Gazelle.
(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 900 inches per second. 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 as fast as a Hare.
(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 800 inches per second. 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-and-one-tenth times as fast as a Greyhound.
In other words, the speed of a Greyhound is 0.909 times 872.1 inches per second.
(a.k.a. English greyhound) (approximate maximum speed)
Greyhounds reach average race speeds of 792 inches per second. 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-and-one-third times as fast as Secretariat.
In other words, the speed of Secretariat is 0.758 times 872.1 inches per second.
(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 661 inches per second in 1973. His margin of victory in the race, also a record-setter, was 31 lengths.
It's about three-fourths as fast as a Knuckleball (baseball).
In other words, the speed of a Knuckleball (baseball) is 1.4 times 872.1 inches per second.
(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 1,200 inches per second. Eddie Cicotte, who was later implicated in the 1919 Black Sox scandal, is credited with developing the pitch ca. 1906.
It's about seven-tenths as fast as a Cheetah.
In other words, 872.1 inches per second is 0.7218 times the speed of a Cheetah, and the speed of a Cheetah is 1.385 times that amount.
(Acinonyx jubatus)
The cheetah can reach speeds of up to 1,208 inches per second in short bursts. From a crouching position, the cheetah can attain these speeds in just 2.25 seconds.
It's about two-thirds as fast as a Hurricane.
In other words, 872.1 inches per second is 0.669 times the speed of a Hurricane, and the speed of a Hurricane is 1.49 times that amount.
(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 1,300 inches per second. 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 3,390 inches per second.