problem02_07 solution

University Physics with Modern Physics with Mastering Physics (11th Edition)

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2.7: a) The van will travel 480 m for the first 60 s and 1200 m for the next 60 s, for a total distance of 1680 m in 120 s and an average speed of . s m 0 . 14 b) The first stage of the journey takes s 30 s m 8.0 m 240 = and the second stage of the journey takes
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Unformatted text preview: , s 12 s) m 20 m 240 ( = so the time for the 480-m trip is 42 s, for an average speed of . s m 11.4 c) The first case (part (a)); the average speed will be the numerical average only if the time intervals are the same....
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This document was uploaded on 02/04/2008.

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