document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1060601>Question 1060601</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An arrow is shot vertically upward from a platform 40 feet high at a rate of 224 ft/s. This is modeled by the equation h=-16t^2+224t+40. When will the arrow hit the ground? (Round 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 #675556 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=675556\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An arrow is shot vertically upward from a platform 40 feet high at a rate of 224 ft/s.<BR>\n" );
document.write( " This is modeled by the equation h=-16t^2+224t+40.<BR>\n" );
document.write( " When will the arrow hit the ground? (Round to three decimal places)<BR>\n" );
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document.write( "When the arrow hits the ground, h = 0, therefore<BR>\n" );
document.write( "-16t^2 + 224t + 40 = 0<BR>\n" );
document.write( "use the quadratic formula to find t; a=-16; b=224; c=40<BR>\n" );
document.write( "The reasonable solution<BR>\n" );
document.write( "t = 14.176 seconds<BR>\n" );
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document.write( "Check this using you calc with t=14.176<BR>\n" );
document.write( "-16(14.176^2) + 224(14.176 + 40 =<BR>\n" );
document.write( "  </SPAN>\n" );
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