How fast is 139 inches per second?
It's about half as fast as Noah Ngeny
The speed of Noah Ngeny is about 298.30 inches per second.
(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 298.30 inches per second. According to some reports, Ngeny did not begin running competitively until just three years before setting the record.
It's about half as fast as a Bull
The speed of a Bull is about 260 inches per second.
(for animals involved in the Running of the Bulls, a.k.a. Encierro, San Fermin, Pamplona, Spain) (herd average speed)
The herd of the annual Encierro in Pamplona, Spain runs at an average speed of 260 inches per second. The Encierro is run annually from July 7th through July 14th and involves 42 bulls, 77 oxen, and an estimated 17,000 runners over the course of the event.
It's about one-and-three-tenths times as fast as a Crocodile
The speed of a Crocodile is about 110 inches per second.
(American Crocodile, Crocodylus acutus) (swimming speed)
An American crocodile can reach speeds in the water of up to 110 inches per second. On land, larger crocodiles can "gallop" when fleeing danger at speeds of up to 220 inches per second.
It's about one-and-four-fifths times as fast as Michael Phelps
The speed of Michael Phelps is about 76.4760 inches per second.
(at the Beijing Olympics, 2008; 200 m freestyle) (a.k.a. Michael Fred Phelps) (swimmer; 1985-)
Setting a world record, Michael Phelps swam the 200 m freestyle in 1:42.96 for an average speed of 76.4760 inches per second. Phelps would go on to win nine gold medals individually in the 2008 Olympics - more than all but eight of the competing nations.
It's about two-and-a-half times as fast as Walking Pedestrians (in Manhattan)
The speed of Walking Pedestrians (in Manhattan) is about 51 inches per second.
(Manhattan; average speed; 8,978 person-sample)
A 2006 Study by the New York City Department of City Planning found that pedestrians in that city walk at an average rate of 51 inches per second. Pedestrians wearing headphones, the study went on to find, walk at a slightly faster 56 inches per second
It's about seven times as fast as an Iceberg
The speed of an Iceberg is about 20 inches per second.
(a.k.a. Berg) (Newfoundland iceberg average)
Moved by ocean currents and wind, icebergs can drift at speeds of about 20 inches per second. The largest iceberg ever recorded was a found near Baffin Island, Nunavut and was estimated to be nine billion metric tons.
It's about 55 times as fast as a Sloth
The speed of a Sloth is about 2.60 inches per second.
(for Brown-throated three-toed sloth, Bradypus variegatus)
The three-toed sloth moves along the ground at an average speed of 2.60 inches per second. Long thought to be lengthy sleepers, a 2008 study concluded that sloths sleep an average of only 9.6 hours per day.
It's about 90,000,000 times as fast as Grass growing
The speed of Grass growing is about 0.00000160 inches per second.
(for Kentucky Bluegrass, Poa pratensis) (a.k.a. Smooth Meadow grass, a.k.a. Common Meadow grass) (Summer months, ideal growing conditions)
Kentucky Bluegrass, one of the most common grasses in North America, grows about 0.00000170 inches per second in the summer months under ideal conditions. When left un-mowed, Kentucky Bluegrass grows to heights of 60 to 90 cm (2 to 3 ft) and blossoms with a blue flower.