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How fast is 745 knots?

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It's about 5,500 times as fast as a Sloth.
In other words, the speed of a Sloth is 0.00018 times 745 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-eight-hundred-thousandth as fast as The Speed of Light.
In other words, 745 knots is 0.00000127842145752420 times the speed of The Speed of Light, and the speed of The Speed of Light is 782,214.655514780 times that amount.
(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 9,500,000,000 times as fast as Grass growing.
In other words, the speed of Grass growing is 0.0000000001000 times 745 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.