document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=200779>Question 200779</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7)	The path of a falling object is given by the function   where  represents the initial velocity in ft/sec and  represents the initial height in feet. \r<BR>\n" );
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document.write( "a)	If a rock is thrown upward with an initial velocity of 64 feet per second from the top of a 25-foot building, write the height (s) equation using this information.\r<BR>\n" );
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document.write( "	Typing hint:  Type t-squared as t^2<BR>\n" );
document.write( "Answer: \r<BR>\n" );
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document.write( "b)	How high is the rock after 1 second?<BR>\n" );
document.write( "	Answer:	<BR>\n" );
document.write( "	Show your work here: \r<BR>\n" );
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document.write( "c)	After how many seconds will the graph reach maximum height? <BR>\n" );
document.write( "	Answer: <BR>\n" );
document.write( "	Show your work here:<BR>\n" );
document.write( "			\r<BR>\n" );
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document.write( "d)	What is the maximum height?<BR>\n" );
document.write( "	Answer:  <BR>\n" );
document.write( "        Show your work here: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #151020 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=151020\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) If a rock is thrown upward with an initial velocity of 64 feet per second from the top of a 25-foot building, write the height (s) equation using this information. <BR>\n" );
document.write( "Typing hint: Type t-squared as t^2<BR>\n" );
document.write( "Answer: h(t) = -16t^2 + 64t + 25  (height above the ground, not the building)<BR>\n" );
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document.write( "b) How high is the rock after 1 second?<BR>\n" );
document.write( "Answer: h(1) = -16 + 64 + 25 = 73 feet<BR>\n" );
document.write( "Show your work here: <BR>\n" );
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document.write( "c) After how many seconds will the graph reach maximum height? <BR>\n" );
document.write( "Answer: 2<BR>\n" );
document.write( "Show your work here: Solve for h = 25 feet.<BR>\n" );
document.write( "-16t^2 + 64t + 25 = 25<BR>\n" );
document.write( "16t^2 = 64t<BR>\n" );
document.write( "t = 0, t = 4<BR>\n" );
document.write( "The rock is at 25 feet twice, once when launched (t=0) and on its way down (t=4).  The time at max height is the center of the 2 times, = 2 seconds.\r<BR>\n" );
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document.write( "d) What is the maximum height?<BR>\n" );
document.write( "Answer: h(2) = -64 + 128 + 25 = 89 feet<BR>\n" );
document.write( "Show your work here:<BR>\n" );
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