document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1071607>Question 1071607</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane is flying at an altitude of 1000 meters. A skydiver jumps from the plane with no upward speed. The equation h(x)=-4.9x^2 + 1000 where h(x) represents her height above the ground during the freefall as a function of time, x, in seconds, since the beginning of her jump. <BR>\n" );
document.write( "5. How high above the earth is the skydiver after 6.5 seconds?<BR>\n" );
document.write( "6. After how many seconds is the skydiver 100 meters above the ground?<BR>\n" );
document.write( "7. After how many seconds does the skydiver land?\r<BR>\n" );
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document.write( "please get back to me soon. thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #686520 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=686520\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5.  After 6.5 seconds, h(6.5)=-4.9(6.5^2)+1000=-207.025+1000=793 meters to nearest meter.<BR>\n" );
document.write( "6.  100=-4.9 x^2+1000<BR>\n" );
document.write( "-900=-4.9 x^2<BR>\n" );
document.write( "x^2=183.67<BR>\n" );
document.write( "x=13.55 sec.<BR>\n" );
document.write( "7.  Assuming that there is no change in speed, no deceleration, <BR>\n" );
document.write( "0=-4.9x^2+1000<BR>\n" );
document.write( "4.9x^2=1000<BR>\n" );
document.write( "x^2=204.08<BR>\n" );
document.write( "x=14.29 sec </SPAN>\n" );
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