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How fast is 443.580 feet per minute?

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It's about one-forty-five-thousandth as fast as a bolt of Lightning
In other words, 443.580 feet per minute is 0.000023 times the speed of a bolt of Lightning, and the speed of a bolt of Lightning is 43,000 times that amount.
(atmospheric electrical discharge)
A bolt of lightning can travel at up to 19,000,000 feet per minute when arcing from the atmosphere to the Earth. An estimated 280 million lightning strikes strikes occur each year.
It's about 55,000,000 times as fast as Grass growing
In other words, 443.580 feet per minute is 56,000,000 times the speed of Grass growing, and the speed of Grass growing is 0.000000018 times that amount.
(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 0.00000830 feet per minute 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.
It's about 0.000000008 times as fast as The Speed of Light
In other words, 443.580 feet per minute is 0.0000000075164879564782 times the speed of The Speed of Light, and the speed of The Speed of Light is 133,040,857.0851 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 59,014,263,385.8270 feet per minute, per the formal definition of the meter. While visible light travels close to this speed in air, it slows to 39,342,842,257.8740 feet per minute when passing through the glass of a typical window.