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How fast is 0.0278 miles per second?

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It's about one-twentieth as fast as a Bullet (Rifle)
In other words, 0.0278 miles per second is 0.0489 times the speed of a Bullet (Rifle), and the speed of a Bullet (Rifle) is 20.40 times that amount.
(5.56 x 45 mm, a.k.a. 5.56 NATO)
A 5.56 x 45 mm cartridge is fired at a velocity of 0.5690 miles per second. As the NATO rifle cartridge, it is used by the military forces of more than thirty-one countries, including use in the M16 series, M4 Carbine, HK-416, and M249 Squad automatic weapons used by the United States armed forces.
It's about twenty times as fast as Michael Phelps
In other words, 0.0278 miles per second is 23.032 times the speed of Michael Phelps, and the speed of Michael Phelps is 0.043418 times that amount.
(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 0.001207 miles 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 thirty times as fast as Walking Pedestrians (in Manhattan)
In other words, the speed of Walking Pedestrians (in Manhattan) is 0.029 times 0.0278 miles 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 0.00081 miles per second. Pedestrians wearing headphones, the study went on to find, walk at a slightly faster 0.00088 miles per second
It's about 90 times as fast as an Iceberg
In other words, the speed of an Iceberg is 0.01 times 0.0278 miles per second.
(a.k.a. Berg) (Newfoundland iceberg average)
Moved by ocean currents and wind, icebergs can drift at speeds of about 0.0003 miles 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 one-one-hundred-fiftieth as fast as The Space Shuttle
In other words, 0.0278 miles per second is 0.0057776 times the speed of The Space Shuttle, and the speed of The Space Shuttle is 173.08 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 650 times as fast as a Sloth
In other words, the speed of a Sloth is 0.0015 times 0.0278 miles per second.
(for Brown-throated three-toed sloth, Bradypus variegatus)
The three-toed sloth moves along the ground at an average speed of 0.0000410 miles 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 one-nine-hundredth as fast as a Meteor
In other words, 0.0278 miles per second is 0.0011 times the speed of a Meteor, and the speed of a Meteor is 910 times that amount.
(formally Meteoroid or meteorite, depending on the context; a.k.a. "shooting star", a.k.a. "falling star")
Small meteoroids enter the Earth's atmosphere at speeds between 6.90 miles per second and 45 miles per second, depending on their size. The fireball effect, known as ablation, ceases once the atmosphere has slowed the meteoroid to a velocity of about 1.70 miles per second.