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How fast is 39.1 knots?

It's about 40 times as fast as an Iceberg
The speed of an Iceberg is about 1 knots.
(a.k.a. Berg) (Newfoundland iceberg average)
Moved by ocean currents and wind, icebergs can drift at speeds of about 1 knot. 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-forty-fifth as fast as a Bullet (Rifle)
The speed of a Bullet (Rifle) is about 1,780 knots.
(5.56 x 45 mm, a.k.a. 5.56 NATO)
A 5.56 x 45 mm cartridge is fired at a velocity of 1,780 knots. 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 300 times as fast as a Sloth
The speed of a Sloth is about 0.130 knots.
(for Brown-throated three-toed sloth, Bradypus variegatus)
The three-toed sloth moves along the ground at an average speed of 0.130 knots. 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-four-hundredth as fast as The Space Shuttle
The speed of The Space Shuttle is about 15,052 knots.
(Orbiter vehicle velocity)
The space shuttle orbits at a speed of 15,052 knots. 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 one-two-thousandth as fast as a Meteor
The speed of a Meteor is about 82,000 knots.
(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 22,000 knots and 140,000 knots, depending on their size. The fireball effect, known as ablation, ceases once the atmosphere has slowed the meteoroid to a velocity of about 5,400 knots.
It's about one-five-thousandth as fast as a bolt of Lightning
The speed of a bolt of Lightning is about 190,000 knots.
(atmospheric electrical discharge)
A bolt of lightning can travel at up to 190,000 knots when arcing from the atmosphere to the Earth. An estimated 280 million lightning strikes strikes occur each year.
It's about 0.00000007 times as fast as The Speed of Light
The speed of The Speed of Light is about 582,749,918.358530 knots.
(C) (in a vacuum)
The speed of light (and all other electromagnetic radiation) in a perfect vacuum is known as "c" and measures 582,749,918.358530 knots, per the formal definition of the meter. While visible light travels close to this speed in air, it slows to 388,499,945.578830 knots when passing through the glass of a typical window.
It's about 500,000,000 times as fast as Grass growing
The speed of Grass growing is about 0.0000000780 knots.
(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 0.0000000820 knots 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.
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