document.write( "Question 333997: Total distance = 20 miles How fast do you have to go for the last 10 miles for the average velocity for the entire trip to be 5 mi/h?
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document.write( "Given the average velocity for the first 10 miles. Is it possible to have a 20mi/hr average velocity for te total 20 miles.
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document.write( "Why or why not? \n" );
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Algebra.Com's Answer #239315 by stanbon(75887) ![]() You can put this solution on YOUR website! Total distance = 20 miles \n" ); document.write( "How fast do you have to go for the last 10 miles for the average velocity for the entire trip to be 5 mi/h? \n" ); document.write( "--- \n" ); document.write( "If average velocity is 5 mph, time = 20/5 = 4 hours. \n" ); document.write( "Not knowing the speed/time of the 1st 10 miles you \n" ); document.write( "cannot determine the time needed for the last 10 miles. \n" ); document.write( "-------------------------------------------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Given the average velocity for the first 10 miles. Is it possible to have a 20mi/hr average velocity for the total 20 miles. \n" ); document.write( "Why or why not? \n" ); document.write( "That depends on the time/speed of the 1st 10 miles. \n" ); document.write( "If the 1st 10 miles takes more that 1 hr you cannot \n" ); document.write( "get an average of 20 mph for the 20 miles because \n" ); document.write( "the total time to average 20 mph for 20 miles is 1 hr. \n" ); document.write( "========================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========================== \n" ); document.write( " \n" ); document.write( " |