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How fast is 0.2130 miles per second?

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It's about twenty times as fast as a Hare
In other words, the speed of a Hare is 0.05 times 0.2130 miles per second.
(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 0.01 miles 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 twenty-and-a-half times as fast as Secretariat
In other words, the speed of Secretariat is 0.049 times 0.2130 miles 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 0.0104 miles per second in 1973. His margin of victory in the race, also a record-setter, was 31 lengths.
It's about one-twenty-fifth as fast as The Space Shuttle
In other words, 0.2130 miles per second is 0.044268 times the speed of The Space Shuttle, and the speed of The Space Shuttle is 22.590 times that amount.
(Orbiter vehicle velocity)
The space shuttle orbits at a speed of 4.81170 miles per second. 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 thirty times as fast as Michael Johnson
In other words, 0.2130 miles per second is 33.120 times the speed of Michael Johnson, and the speed of Michael Johnson is 0.03019 times that amount.
(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 0.006433 miles per second 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 thirty times as fast as Usain Bolt
In other words, 0.2130 miles per second is 33.30 times the speed of Usain Bolt, and the speed of Usain Bolt is 0.03 times that amount.
(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 0.00642 miles per second 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 forty times as fast as Flo-Jo
In other words, 0.2130 miles per second is 36.580 times the speed of Flo-Jo, and the speed of Flo-Jo is 0.02734 times that amount.
(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 0.005824 miles per second. Known as a 200 m runner, Joyner also set a record time in a 100 m race at in 1987.
It's about 45 times as fast as Noah Ngeny
In other words, 0.2130 miles per second is 45.230 times the speed of Noah Ngeny, and the speed of Noah Ngeny is 0.02211 times that amount.
(in Rieti, Italy; 1999) (sprinter; 1978-)
Setting a world record at the Rieti Grand Prix in 1999, Noah Ngeny ran 1,000 m in 2:11.96 for an average speed of 0.004709 miles per second. According to some reports, Ngeny did not begin running competitively until just three years before setting the record.