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Exercise 8

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motion: TOC for Knowledge Concepts, Exercises, and Solutions




We see a jet airplane flying overhead, and we notice that it travels a fully open, 
outstretched hand width (from tip of thumb to tip of pinky) in 15 seconds.  We 
also know that commercial aircraft typically cruise at about 35,000 feet.  How 
fast is this jet going, in miles per hour?  Does your answer make numerical sense?