document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=376663>Question 376663</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a soccer ball was kicked from the ground and its height in meters above ground is modeled by the function h(t)=-4.9t^2+19.6t where t represents the time in  second after the ball is kicked how long is the  ball in the air  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #267935 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=267935\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h(t)=-4.9t^2+19.6t<BR>\n" );
document.write( "h= 0 when it touches the ground<BR>\n" );
document.write( "..<BR>\n" );
document.write( "-4.9t^2+19.6t=0<BR>\n" );
document.write( "-4.9t^2=-19.6t<BR>\n" );
document.write( "/-4.9t<BR>\n" );
document.write( "t=-19.6t/-4.9t<BR>\n" );
document.write( "t=4 seconds.<BR>\n" );
document.write( "..<BR>\n" );
document.write( "As you will see from the graph the height is = 0 at t=4 seconds<BR>\n" );
document.write( "..<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-1%2C5%2C-5%2C22%2C%28-4.9x%5E2%2B19.6x%29%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-1%2C5%2C-5%2C22%2C%28-4.9x%5E2%2B19.6x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "..<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );