document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=627227>Question 627227</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A small package is dropped from a hovering helicopter at an altitude of 490 m. Neglecting air resistance, how long does it take the package top 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 #394792 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=394792\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A small package is dropped from a hovering helicopter at an altitude of 490 m. Neglecting air resistance, how long does it take the package top reach the ground?<BR>\n" );
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document.write( "A falling object equation: h(t) = -4.9t^2 + 490<BR>\n" );
document.write( "h(t) = 0 when it hits the ground<BR>\n" );
document.write( "-4.9t^2 + 490 = 0<BR>\n" );
document.write( "-4.9t^2 = -490<BR>\n" );
document.write( "Divide both sides by -4.9, results:<BR>\n" );
document.write( "t^2 = 100<BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28100%29 ALIGN=MIDDLE  ALT=\"sqrt%28100%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = 10 secs to fall 490 meters </SPAN>\n" );
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