document.write( "Question 34419: how long does it take a automobile traveling 71.4km/h to become even with a car traveling in another lane 61.4km/h if the cars front bumper s are initially 125m apart? answer in units of s \n" ); document.write( "
Algebra.Com's Answer #20712 by hydromojo(20)\"\" \"About 
You can put this solution on YOUR website!
The dreaded travelling cars (or trains) -> used to send shivers down my spine in school. Hope I can help now since I kinda understand it.\r
\n" ); document.write( "\n" ); document.write( "Basic equation for time = (distance/speed)\r
\n" ); document.write( "\n" ); document.write( "If moving in the same direction, relative speed = big speed - small speed
\n" ); document.write( "if in opposite directions, relative speed = big speed + small speed\r
\n" ); document.write( "\n" ); document.write( "In our case, since the cars are moving in the same direction, relative speed = 71.4-61.4 = 10 Km/hr\r
\n" ); document.write( "\n" ); document.write( "distance = 125mtrs = .125Km\r
\n" ); document.write( "\n" ); document.write( "so, time taken = \"+.125%2F10+\"= .0125hrs = .0125*60 mts = .0125*60*60 sec\r
\n" ); document.write( "\n" ); document.write( "= 45 sec
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