document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=153479>Question 153479</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On planet  X, an object falls  18 feet  in 3 seconds. Knowing the distance it falls varies directly with the square of the time of fall, how long does it take an object to fall 100 feet? Round your answer to three decimal places </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #112977 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=112977\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> On planet  X, an object falls  18 feet  in 3 seconds. Knowing the distance it falls varies directly with the square of the time of fall, how long does it take an object to fall 100 feet? Round your answer to three decimal places<BR>\n" );
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document.write( "distance = k*time^2<BR>\n" );
document.write( "d = kt^2<BR>\n" );
document.write( "Find \"k\":<BR>\n" );
document.write( "18 = k*3^2<BR>\n" );
document.write( "k = 2<BR>\n" );
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document.write( "Equation for planet X:<BR>\n" );
document.write( "d = 2t^2<BR>\n" );
document.write( "100 = 2*t^2<BR>\n" );
document.write( "t^2 = 50<BR>\n" );
document.write( "t = 5sqrt(2)<BR>\n" );
document.write( "t = 7.071 seconds<BR>\n" );
document.write( "=====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );