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How fast is 55 kilometers per hour?
It's about nine-tenths as fast as Secretariat
The speed of Secretariat is about 60.50 kilometers per hour.
(at Belmont Stakes, 1973)
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It's about four-fifths as fast as a Gazelle
The speed of a Gazelle is about 70 kilometers per hour.
(for Thomson's Gazelle, a.k.a. Eudorcas thomsoni, a.k.a. "Tommie", a.k.a. "Tommy")
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It's about four-fifths as fast as a Hare
The speed of a Hare is about 70 kilometers per hour.
(for European Brown Hare, a.k.a. Brown Hare, a.k.a. Lepus europaeus, a.k.a. Brown Hare)
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It's about three-fourths as fast as a Greyhound
The speed of a Greyhound is about 72.40 kilometers per hour.
(a.k.a. English greyhound) (approximate maximum speed)
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It's about one-and-a-half times as fast as Michael Johnson
The speed of Michael Johnson is about 37.260 kilometers per hour.
(a.k.a. Michael Duane Johnson) (sprinter; 1967-) (at the Atlanta Olympics, 1996)
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It's about one-and-a-half times as fast as Usain Bolt
The speed of Usain Bolt is about 37.10 kilometers per hour.
(at the Beijing Olympics, 2008) (a.k.a. Usain St. Leo Bolt, OJ, C.D.) (sprinter; 1986-)
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It's about one-and-three-fifths times as fast as Flo-Jo
The speed of Flo-Jo is about 33.740 kilometers per hour.
(at the Seoul Olympics, 1998) (a.k.a. Florence Griffith-Joyner, a.k.a. Florence Delorez Griffith) (swimmer; 1959-1998)
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It's about half as fast as a Knuckleball (baseball)
The speed of a Knuckleball (baseball) is about 110 kilometers per hour.
(a.k.a. knuckler, a.k.a. floater, a.k.a. dancer, a.k.a. butterfly ball) (major league average)
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It's about half as fast as a Cheetah
The speed of a Cheetah is about 110.50 kilometers per hour.
(Acinonyx jubatus)
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It's about two times as fast as Noah Ngeny
The speed of Noah Ngeny is about 27.280 kilometers per hour.
(in Rieti, Italy; 1999) (sprinter; 1978-)
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It's about half as fast as a Hurricane
The speed of a Hurricane is about 119 kilometers per hour.
(formally: Topical cyclone; a.k.a. typhoon)
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It's about half as fast as a Curveball (baseball)
The speed of a Curveball (baseball) is about 120 kilometers per hour.
(a.k.a. hook, a.k.a. hammer, a.k.a. yakker) (major league average)
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It's about two-and-a-half times as fast as a Bull
The speed of a Bull is about 24 kilometers per hour.
(for animals involved in the Running of the Bulls, a.k.a. Encierro, San Fermin, Pamplona, Spain) (herd average speed)
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It's about two-fifths as fast as a Fastball (baseball)
The speed of a Fastball (baseball) is about 150 kilometers 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)
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It's about three-tenths as fast as a Skydiver (belly-to-earth)
The speed of a Skydiver (belly-to-earth) is about 190 kilometers per hour.
(Belly-to-Earth orientation, average conditions, terminal velocity)
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