document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1007759>Question 1007759</A>: <I><SPAN STYLE=\"word-break: break-all;\"> With what velocity will a stone strike the ground if dropped from the top of the building 400 ft high?Solve by integration. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #623593 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=623593\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> With what velocity will a stone strike the ground if dropped from the top of the building 400 ft high?Solve by integration.<BR>\n" );
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document.write( "h(t) = -16t^2 + vo*t + ho is commonly used with feet units (vo = initial speed, ho = initial height)<BR>\n" );
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document.write( "h(t) = -16t^2 + 400<BR>\n" );
document.write( "h(t) = 0 at impact<BR>\n" );
document.write( "-16t^2 + 400 = 0<BR>\n" );
document.write( "t = 5 seconds (Ignore the -5)<BR>\n" );
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document.write( "v = a*t = 32*5<BR>\n" );
document.write( "v at impact = 160 ft/sec<BR>\n" );
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document.write( "There's nothing to integrate. </SPAN>\n" );
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