document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=949809>Question 949809</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A stone thrown downward with an initial velocity of 29.4 m/sec will travel a distance of s meters, where s(t)=4.9t^2+29.4t and t is in seconds. if a stone is thrown downward at 29.4 m/sec from a height of 548.8m, how long will it take the stone to hit 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 #579895 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=579895\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A stone thrown downward with an initial velocity of 29.4 m/sec will travel a distance of s meters, where s(t)=4.9t^2+29.4t and t is in seconds. if a stone is thrown downward at 29.4 m/sec from a height of 548.8m, how long will it take the stone to hit the ground? <BR>\n" );
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document.write( "Use the height measured from the ground.<BR>\n" );
document.write( "h(t) = -4.9t^2 + 29.4t + 548.8<BR>\n" );
document.write( "Notice at t = 0 seconds, h = 548.8 meters<BR>\n" );
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document.write( "h(t) = -4.9t^2 + 29.4t + 548.8<BR>\n" );
document.write( "When it hits the ground, h = 0<BR>\n" );
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document.write( "-4.9t^2 + 29.4t + 548.8 = 0<BR>\n" );
document.write( "t^2 - 6t - 112 = 0<BR>\n" );
document.write( "Solve for t. </SPAN>\n" );
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