Correction for the speed of an Arrow (archery)
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How fast is 390,000 inches per hour?
It's about one-thirty-fifth as fast as an Arrow (archery)
The speed of an Arrow (archery) is about 12,710,000 inches per hour.
A 250 gram arrow will reach speeds of approximately 12,710,000 inches per hour when fired from a 60-lb, 28-inch draw bow . Archeological evidence from the Ahrensburg valley near Hamburg, Germany indicates that arrows have been used since at least 11 to 12,000 years ago.