document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=526218>Question 526218</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An object is thrown into the air at 80ft/sec.. If the height \"h\" of the object after \"t\" seconds of traveling is given by h=80t-16t^2, find out when this object hits the ground.  (Remember: ground is h=0) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #348369 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=348369\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An object is thrown into the air at 80ft/sec.. If the height \"h\" of the object after \"t\" seconds of traveling is given by h=80t-16t^2, find out when this object hits the ground.  (Remember: ground is h=0)<BR>\n" );
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document.write( "Setting h=0 in the above equation gives:<BR>\n" );
document.write( "80t - 16t^2 = 0<BR>\n" );
document.write( "Dividing through by the GCF(=16) and factoring the remaining expression gives:<BR>\n" );
document.write( "t(5 - t) = 0<BR>\n" );
document.write( "The two solutions are t=0 (the moment it is thrown) and t=5 (when it returns to the ground)<BR>\n" );
document.write( "Ans: t = 5 sec </SPAN>\n" );
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