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45 miles per second is about 3,500 times as fast as a Greyhound
In other words, the speed of a Greyhound is 0.000278 times that amount.
(a.k.a. English greyhound) (approximate maximum speed)
Greyhounds reach average race speeds of 0.0125 miles 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.
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