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How fast is 38,300 centimeters per second?

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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 38,300 centimeters per second.
(for Brown-throated three-toed sloth, Bradypus variegatus)
The three-toed sloth moves along the ground at an average speed of 6.70 centimeters 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-eight-hundred-thousandth as fast as The Speed of Light
In other words, 38,300 centimeters per second is 0.00000127755048460890 times the speed of The Speed of Light, and the speed of The Speed of Light is 782,747.93211490 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 29,979,245,800 centimeters per second, per the formal definition of the meter. While visible light travels close to this speed in air, it slows to 19,986,163,867 centimeters per second 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 38,300 centimeters 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 0.00000420 centimeters 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.