document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=838504>Question 838504</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a ball is thrown upward with an initial velocity of 32 ft/sec from a height 768ft. its height h in feet after t seconds is given by <BR>\n" );
document.write( "h(t)=-16t^2+32t+768. after how long will the ball reach the ground? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #505123 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=505123\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h(t)=-16t^2+32t+768. after how long will the ball reach the ground?<BR>\n" );
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document.write( "When h(t) = 0<BR>\n" );
document.write( "h(t)= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-16t%5E2%2B32t%2B768+=+0 ALIGN=MIDDLE  ALT=\"-16t%5E2%2B32t%2B768+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5E2+-+2t+-+48+=+0 ALIGN=MIDDLE  ALT=\"t%5E2+-+2t+-+48+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for t, use the positive value.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );