document.write( "Question 647347: A car starts from rest, and reaches a speed of 50MPH in 6 seconds, what is the acceleration and average speed ? \n" ); document.write( "
Algebra.Com's Answer #406140 by Edwin McCravy(20064)\"\" \"About 
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A car starts from rest, and reaches a speed of 50MPH in 6 seconds, what is the acceleration and average speed ?\r
\n" ); document.write( "\n" ); document.write( "To change miles per hour to feet per second multiply by \"22%2F15\"\r
\n" ); document.write( "\n" ); document.write( "So 50 miles per hour = 50×\"22%2F15\" = 73.3 feet per second.\r
\n" ); document.write( "\n" ); document.write( "acceleration = \"velocity%2Ftime\" = \"%2873.3%2A%22ft%2Fs%22%29%2F%286s%29\" = 12.2 ft/s².\r
\n" ); document.write( "\n" ); document.write( "average speed = \"distance_traveled%2Ftime\"\r
\n" ); document.write( "\n" ); document.write( "Formula for distance: \"s=v%5B0%5Dt%2Bexpr%281%2F2%29at%5E2\" = \"0%2A6%2Bexpr%281%2F2%29%2812.2%296%5E2\" = 0 + 6.1 = 6.1 feet\r
\n" ); document.write( "\n" ); document.write( "average speed = \"distance_traveled%2Ftime\" = \"6.1ft%2F6s\" = 1.02 ft/s\r
\n" ); document.write( "\n" ); document.write( "Edwin\r
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