Although Evel Knievel never succeeded in jumping over the Grand Canyon (see Problem 80), he was famous for jumping (with the help of his motorcycle) over, among other things, 14 large trucks. This jump covered an approximate distance of 135 ft. What was Mr. Knievel’s minimum initial velocity for this jump? Ignore air drag.
(reference problem 80)
Daredevil stunt. Once upon a time, a stuntman named Evel Knievel boasted that he would jump across the Grand Canyon on a motorcycle. (This stunt was never attempted.) The width of the Grand Canyon varies from place to place, but suppose Mr. Knievel attempted to jump across at a point where the width is about 5 mi and the two rims are at the same altitude. What minimum initial speed would be required to make it safely across the canyon? Express your answer in meters per second and miles per hour. Ignore air drag.
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