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How fast is 72.940 centimeters per second?

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It's about one-one-hundred-fifty-thousandth as fast as a bolt of Lightning.
In other words, the speed of a bolt of Lightning is 140,000 times 72.940 centimeters per second.
(atmospheric electrical discharge)
A bolt of lightning can travel at up to 9,700,000 centimeters per second when arcing from the atmosphere to the Earth. An estimated 280 million lightning strikes strikes occur each year.
It's about 20,000,000 times as fast as Grass growing.
In other words, 72.940 centimeters per second is 18,000,000 times the speed of Grass growing, and the speed of Grass growing is 0.0000000560 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 0.00000420 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.
It's about 0.000000003 times as fast as The Speed of Light.
In other words, 72.940 centimeters per second is 0.000000002433016510 times the speed of The Speed of Light, and the speed of The Speed of Light is 411,012,418 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 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 19,986,163,900 centimeters per second when passing through the glass of a typical window.