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How fast is 0.019 miles per second?

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It's about one-three-thousandth as fast as a bolt of Lightning
In other words, 0.019 miles per second is 0.00031 times the speed of a bolt of Lightning, and the speed of a bolt of Lightning is 3,200 times that amount.
(atmospheric electrical discharge)
A bolt of lightning can travel at up to 60 miles per second when arcing from the atmosphere to the Earth. An estimated 280 million lightning strikes strikes occur each year.
It's about 0.0000001 times as fast as The Speed of Light
In other words, 0.019 miles per second is 0.000000101995681292290 times the speed of The Speed of Light, and the speed of The Speed of Light is 9,804,336.68690630 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 186,282.397051220 miles per second, per the formal definition of the meter. While visible light travels close to this speed in air, it slows to 124,188.264702890 miles per second when passing through the glass of a typical window.
It's about 750,000,000 times as fast as Grass growing
In other words, the speed of Grass growing is 0.00000000130 times 0.019 miles 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 0.0000000000260 miles 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.