Difference between revisions of "1995 AHSME Problems/Problem 7"
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Revision as of 21:54, 9 January 2008
Problem
The radius of Earth at the equator is approximately 4000 miles. Suppose a jet flies once around Earth at a speed of 500 miles per hour relative to Earth. If the flight path is a neglibile height above the equator, then, among the following choices, the best estimate of the number of hours of flight is:
Solution
We want the number of hours that it takes the jet to fly the length of the circumference. 
. The best estimate of that is 
