document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=378649>Question 378649</A>: <I><SPAN STYLE=\"word-break: break-all;\"> use the formula h=-16t^2+Vot to answer the following:\r<BR>\n" );
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document.write( "a baseball is thrown straight upwards with an initial velocity of 40 ft/s. when does the ball reach maximum height? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #268939 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=268939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a baseball is thrown straight upwards with an initial velocity of 40 ft/s. when does the ball reach maximum height?<BR>\n" );
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document.write( "h(t) = -16t^2 + 40t<BR>\n" );
document.write( "The function is a parabola.  The max ht is at the vertex.<BR>\n" );
document.write( "The vertex is at t = -b/2a = -40/-32 = 1.25 seconds<BR>\n" );
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