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chp2 problem14

Physics: Principles with Applications

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http://www.hwproblems.com/cgi-bin/book.cgi?bookid=0044&cptn=2pr14&id=62762 Chapter 2, Problem 14 Question Problem Average speed is the total distance traveled divided by the total time taken. Rewrite the formula. To find the time elapsed to cover the first part of the trip, substitute 250 km for the distance traveled and 95 km/h for the average speed. For the return trip substitute 250 km for the distance traveled and 55 km/h for the average speed. To find the average speed for the complete round trip substitute, 250 km + 250 km = 500 km for
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Unformatted text preview: the total distance traveled and 2.63 h + 1 h + 4.54 h = 8.17 h for the total time taken. Thus, the average speed of the complete round trip is . Average velocity is the displacement divided by the time. The displacement is zero at the end of the round trip because you return to the starting point. Thus, the average velocity is . http://www.hwproblems.com/cgi-bin/book.cgi?bookid=0044&cptn=2pr14&id=62762 [1/31/2008 11:39:41 AM]...
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