document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=892682>Question 892682</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How long does it take a ball to reach the ground 7.0 m below, if it is thrown straight up with an initial speed of 2.0 m/s? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #540788 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=540788\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=-%281%2F2%29gt%5E2%2Bv0%2At%2Bs0 ALIGN=MIDDLE  ALT=\"s=-%281%2F2%29gt%5E2%2Bv0%2At%2Bs0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=-%281%2F2%29%289.8%29t%5E2%2B2t%2B7 ALIGN=MIDDLE  ALT=\"s=-%281%2F2%29%289.8%29t%5E2%2B2t%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=-4.9t%5E2%2B2t%2B7 ALIGN=MIDDLE  ALT=\"s=-4.9t%5E2%2B2t%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Find t when,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s=0 ALIGN=MIDDLE  ALT=\"s=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4.9t%5E2%2B2t%2B7=0 ALIGN=MIDDLE  ALT=\"-4.9t%5E2%2B2t%2B7=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use the quadratic formula,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=%28-2+%2B-+sqrt%282%5E2-4%28-4.9%29%287%29%29%29%2F%282%28-4.9%29%29 ALIGN=MIDDLE  ALT=\"t=%28-2+%2B-+sqrt%282%5E2-4%28-4.9%29%287%29%29%29%2F%282%28-4.9%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=%28-2%2B-sqrt%28141.2%29%29%2F%28-9.8%29 ALIGN=MIDDLE  ALT=\"t=%28-2%2B-sqrt%28141.2%29%29%2F%28-9.8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Only the positive time makes sense here.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=%28-2-11.883%29%2F%28-9.8%29 ALIGN=MIDDLE  ALT=\"t=%28-2-11.883%29%2F%28-9.8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=1.41 ALIGN=MIDDLE  ALT=\"t=1.41\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sec ALIGN=MIDDLE  ALT=\"sec\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );