document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1090533>Question 1090533</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi can somebody please help me answer this question? thank you so much.<BR>\n" );
document.write( "Jacqueline threw a ball from 1 m above the ground. The ball reached a maximum height of 46 m at 3 seconds. <BR>\n" );
document.write( "a)   Determine the equation that will model the parabola for this situation<BR>\n" );
document.write( "b)   How long does it take until the ball hits the ground </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #705081 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=705081\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The equation for the balls' movement would be -1/2g(t²)+v(t)+1 in this case. So, we have:<BR>\n" );
document.write( "h(t)=-4.9(3²)+v(3)+1, or<BR>\n" );
document.write( "46=-4.9(9)+3v+1, or<BR>\n" );
document.write( "3v=89.1<BR>\n" );
document.write( "v=29.7 m/s. So,<BR>\n" );
document.write( "h(t)=-4.9t²+29.7t+1<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "The ball will hit the ground when h(t)=0, so:<BR>\n" );
document.write( "0=-4.9t²+29.7t+1<BR>\n" );
document.write( "Solve for t<BR>\n" );
document.write( "&#9786;&#9786;&#9786;&#9786;<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );