document.write( "Question 102978: The distance it takes to stop a car varies directly as as the square of the speed of the car. It takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of 62 miles per hour? \n" ); document.write( "
Algebra.Com's Answer #74897 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"Distance+=+k+%2A+Speed%5E2\" where k is some constant.
\n" ); document.write( "\"112=k%2A%2840%29%5E2\" Use the values provided to calculate k.
\n" ); document.write( "\"k=112%2F40%5E2\"Multiplicative inverse of \"40%5E2\"
\n" ); document.write( "\"k=0.07\" with units of \"feet%2F%28mph%29%5E2\"
\n" ); document.write( "Your equation is then
\n" ); document.write( "\"Distance+=+0.07+%2A+Speed%5E2\"
\n" ); document.write( "For a speed of 62 mph,
\n" ); document.write( "\"Distance+=+0.07+%2A+62%5E2\"
\n" ); document.write( "Distance = 269.1 feet
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