document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=91991>Question 91991</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the time required for an object to fall to the ground form a building that is 1400 ft. high. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #66808 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=66808\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the time required for an object to fall to the ground form a building that is 1400 ft. high.<BR>\n" );
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document.write( "h(t) = -16t^2+1400<BR>\n" );
document.write( "When it hits the ground its height is zero.<BR>\n" );
document.write( "-16t^2 + 1400 = 0<BR>\n" );
document.write( "16t^2 = 1400<BR>\n" );
document.write( "t^2 = 1400/16<BR>\n" );
document.write( "t = sqrt(1400/16)<BR>\n" );
document.write( "t = 9.354... seconds<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );