document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65897>Question 65897</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The distance required for a car to stop is directly proportional to the square of its velocity. If a car can stop in 112.5 meters at 15 kilometers per hour, how many meters are needed to stop at 25 kilometers per hour?\r<BR>\n" );
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document.write( "Answer Choices:\r<BR>\n" );
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document.write( "A) 250.75<BR>\n" );
document.write( "B) 298.00<BR>\n" );
document.write( "C) 312.50<BR>\n" );
document.write( "D) 337.50 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #46664 by </B><A HREF=/tutors/aboutme.mpl?userid=chitra><B>chitra(359)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=chitra><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=46664\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It is given that distance is directly proportional to the velocity square. \r<BR>\n" );
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document.write( "This is represented as: \r<BR>\n" );
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document.write( "d directly proportional to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=v%5E2 ALIGN=MIDDLE  ALT=\"v%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "By data: \r<BR>\n" );
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document.write( "If the speed of the car is 15 km/hr then the distance required to stop the car is 112.5m. \r<BR>\n" );
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document.write( "If the speed of the car is 25 km/hr then the distance required will be equal to ? \r<BR>\n" );
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document.write( "Let that be equal to \"x\".\r<BR>\n" );
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document.write( "To calculate this we use the data which says: \r<BR>\n" );
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document.write( "d directly proportional to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=v%5E2 ALIGN=MIDDLE  ALT=\"v%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Hence,\r<BR>\n" );
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document.write( "112.5 m ==>   <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15%5E2 ALIGN=MIDDLE  ALT=\"15%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >km/hr\r<BR>\n" );
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document.write( "X m ==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25%5E2 ALIGN=MIDDLE  ALT=\"25%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >km /hr \r<BR>\n" );
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document.write( "Let us cross multiply to find the distance \"x\"\r<BR>\n" );
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document.write( "Therefore, \r<BR>\n" );
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document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28112.5+%2A+25+%2A+25%29%2F%2815+%2A+15%29 ALIGN=MIDDLE  ALT=\"%28112.5+%2A+25+%2A+25%29%2F%2815+%2A+15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28112.5+%2A+625%29%2F%28225%29 ALIGN=MIDDLE  ALT=\"%28112.5+%2A+625%29%2F%28225%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "x = (70312.5/225)\r<BR>\n" );
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document.write( "x = 312.5m \r<BR>\n" );
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document.write( "Hence, the car requires 312.5m to stop if the velocity is 25 km/hr\r<BR>\n" );
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document.write( "I hope the steps are clear.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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