document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=248253>Question 248253</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm having difficulty with this problem: If an object is propelled upward from the ground level with an initial velocity of 224 ft per second, it's height \"h\" in feet \"t\" seconds later is given by the equation h=224t-16t^2. After how many seconds does the object hit the ground?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #180927 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=180927\">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=h=224t-16t%5E2 ALIGN=MIDDLE  ALT=\"h=224t-16t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the given equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0=224t-16t%5E2 ALIGN=MIDDLE  ALT=\"0=224t-16t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=0 ALIGN=MIDDLE  ALT=\"h=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > since the height at the ground level is zero.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-16t%5E2%2B224t=0 ALIGN=MIDDLE  ALT=\"-16t%5E2%2B224t=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Rearrange the equation and terms.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-16t%28t-14%29=0 ALIGN=MIDDLE  ALT=\"-16t%28t-14%29=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Factor out the GCF -16t\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-16t=0 ALIGN=MIDDLE  ALT=\"-16t=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t-14=0 ALIGN=MIDDLE  ALT=\"t-14=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Set each factor equal to zero.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=0 ALIGN=MIDDLE  ALT=\"t=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=14 ALIGN=MIDDLE  ALT=\"t=14\"   DISABLED_style= \"max-width:90%; height:auto;\" > Solve for 't' in each equation\r<BR>\n" );
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document.write( "So the object will be at the ground level when t=0 or t=14. Ignoring the trivial answer of 0, this means that the object will hit the ground after 14 seconds. </SPAN>\n" );
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