document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1198843>Question 1198843</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7. Graph the equation in Desmos or Geogebra. Then answer the following questions. A person throws a ball straight up in the air. The height of a ball, h, in meters, can be modelled by h=-4.9t2+10.78t+1.071, where t is the time in seconds since the ball was thrown.\r<BR>\n" );
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document.write( "a)What is the maximum height the ball can reach?	<BR>\n" );
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document.write( "b)How tall is the person that throws the ball up in the air?			\r<BR>\n" );
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document.write( "c)If the thrower also wants to catch the ball, what time do you think that will occur at? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #832785 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=832785\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h(t) = -4.9t2+10.78t+1.071<BR>\n" );
document.write( "The time is takes to reach maximum height is given by t = -b/2a = -10.78/(-2*4.9) = 1.1 s<BR>\n" );
document.write( "a) h(1.1) = 7 m<BR>\n" );
document.write( "b) The height of the person is the height at t = 0, h(0) = 1.071<BR>\n" );
document.write( "c) The roundtrip time to return to the original height is 2*1.1 = 2.2 s </SPAN>\n" );
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