document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=82180>Question 82180</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rocket is launched from atop a 104-foot cliff with an initial velocity of 113 ft/sec.\r<BR>\n" );
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document.write( "problem a: Substitute the values into the vertical motion formula <BR>\n" );
document.write( "h=-16t(to the power of 2)+vt=c. (v is the initial velocity and c is the starting height.) what is h (height) when the rocket hits the ground?\r<BR>\n" );
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document.write( "problem b: Use the quadratic formula to find out how long the rocket will take to his the ground after it is launched. Round to the nearest tenth of a second. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #58897 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=58897\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A rocket is launched from atop a 104-foot cliff with an initial velocity of 113 ft/sec.\r<BR>\n" );
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document.write( "problem a: Substitute the values into the vertical motion formula <BR>\n" );
document.write( "h=-16t(to the power of 2)+vt=c. (v is the initial velocity and c is the starting height.)<BR>\n" );
document.write( "h(t)= -16t^2 + 113t +104<BR>\n" );
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document.write( "what is h (height) when the rocket hits the ground?<BR>\n" );
document.write( "The height is zero when the rocket hits the round.<BR>\n" );
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document.write( "problem b: Use the quadratic formula to find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second.<BR>\n" );
document.write( "-16t^2 + 113t +104 = 0<BR>\n" );
document.write( "t = [-113+-sqrt(113^2-4*-16*104)]/-32\r<BR>\n" );
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document.write( "t = [-113+-sqrt19425]/-32\r<BR>\n" );
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document.write( "t = [-113+-139.37]/-32\r<BR>\n" );
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document.write( "t = 7.88 seconds<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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