The speed of meteorites at the time they reach the surface of the earth depends largely upon the resistance they have encountered in passing through the atmosphere and upon the hour of day that they fall.
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Boon, John D. and Albritton, Claude C. Jr.
"The Impact Of Large Meteorites,"
Field and Laboratory: Vol. 6
Available at: https://scholar.smu.edu/fieldandlab/vol6/iss2/3