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How fast is 630.2 yards per second?

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It's about 8,500 times as fast as a Sloth.
In other words, the speed of a Sloth is 0.00012 times 630.2 yards per second.
(for Brown-throated three-toed sloth, Bradypus variegatus)
The three-toed sloth moves along the ground at an average speed of 0.073 yards 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-five-hundred-thousandth as fast as The Speed of Light.
In other words, 630.2 yards per second is 0.00000192217938 times the speed of The Speed of Light, and the speed of The Speed of Light is 520,242.809 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 exactly 327,857,019 yards per second, per the formal definition of the meter. While visible light travels close to this speed in air, it slows to 218,571,346 yards per second when passing through the glass of a typical window.
It's about 15,000,000,000 times as fast as Grass growing.
In other words, the speed of Grass growing is 0.000000000071 times 630.2 yards 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 0.000000046 yards 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.