document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=62044>Question 62044</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The height h in feet of an object after t seconds is given by the function h=-16t^2+60t+4.<BR>\n" );
document.write( "How long will it take the object to hit the ground? Round your answer to the nearest thousandth. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #42798 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=42798\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The height h in feet of an object after t seconds is given by the function h=-16t^2+60t+4.<BR>\n" );
document.write( "How long will it take the object to hit the ground? Round your answer to the nearest thousandth.<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "When the object hits the ground the height will be zero.<BR>\n" );
document.write( "Solve for t when the height is zero.<BR>\n" );
document.write( "-16t^2+60t+4=0<BR>\n" );
document.write( "Use the quadratic formula to get:<BR>\n" );
document.write( "t=[-60+-sqrt(60^2-4(-16)(4)]/(-32)<BR>\n" );
document.write( "t=[-60+-sqrt(3856)]/(-32)<BR>\n" );
document.write( "t=[-60-sqrt(3856)]/(-32)<BR>\n" );
document.write( "t=3.816 seconds<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );