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Equivalents in other units


How fast is 123 inches per hour?

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It's about one-sixty-five-thousandth as fast as a Tornado.
In other words, 123 inches per hour is 0.00001571893 times the speed of a Tornado, and the speed of a Tornado is 63,617.56 times that amount.
(EF2) (wind speed range average)
It's about one-eighty-five-thousandth as fast as a Skydiver (headfirst).
In other words, the speed of a Skydiver (headfirst) is 83,000 times 123 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-ninety-thousandth as fast as a Helicopter.
In other words, the speed of a Helicopter is 90,900 times 123 inches per hour.
(for AH-64A Apache, a.k.a. Hughes Model 77) (maximum cruise speed)
It's about one-one-hundred-thousandth as fast as a Lamborghini Gallardo.
In other words, 123 inches per hour is 0.0000098 times the speed of a Lamborghini Gallardo, and the speed of a Lamborghini Gallardo is 100,000 times that amount.
(for Gallardo LP 550-2, a.k.a. Valentino Balboni, 2009 model)
It's about one-one-hundred-thousandth as fast as The TGV (train).
In other words, 123 inches per hour is 0.0000098 times the speed of The TGV (train), and the speed of The TGV (train) is 100,000 times that amount.
(Train à Grande Vitesse) (for SNCF TGV Réseau, a.k.a. "Network" model, a.k.a. TGV-R) (maximum speed)
It's about one-one-hundred-thousandth as fast as an Arrow (archery).
In other words, 123 inches per hour is 0.000009678 times the speed of an Arrow (archery), and the speed of an Arrow (archery) is 103,300 times that amount.
(250 g arrow fired from 60#/28" bow)
It's about one-one-hundred-thousandth as fast as a Porsche 911.
In other words, 123 inches per hour is 0.00000949 times the speed of a Porsche 911, and the speed of a Porsche 911 is 105,000 times that amount.
(for Porsche 911 Type 997 GT2, 2007 model)