document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=118276>Question 118276</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 14a2-15a+4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #86404 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=86404\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A ball is thrown directly upward from ground level with an initial speed of 80 ft/s. How high will it go and when will it return to the ground?<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "h(t) = -16t^2+vot+so<BR>\n" );
document.write( "Your Problem:<BR>\n" );
document.write( "so=0 because it is thrown upward from the ground.<BR>\n" );
document.write( "You want h(t) to be 0 because you want to know when it hits the ground.<BR>\n" );
document.write( "-16t^2+80t=0<BR>\n" );
document.write( "-16t(t-5)=0<BR>\n" );
document.write( "t=0 or t=5<BR>\n" );
document.write( "This means the ball was on the ground when time was zero and it<BR>\n" );
document.write( "will be on the ground again when time is 5 seconds.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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