document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1128031>Question 1128031</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 50 mi/h can stop in 240 ft. What is the maximum speed it can be traveling if it needs to stop in 180 ft? Round your answer to one decimal place.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #744490 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=744490\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d=ks^2<BR>\n" );
document.write( "240=k*50^2<BR>\n" );
document.write( "k=240/2500 or 24/250\r<BR>\n" );
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document.write( "use that in second<BR>\n" );
document.write( "180=(24/250)*s^2<BR>\n" );
document.write( "s^2=250*180/24=1875<BR>\n" );
document.write( "s=sqrt(1875)=43.3 mph </SPAN>\n" );
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