document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106468>Question 106468</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0435510746/algebrahomeworkh>Mechanics I </A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I was not sure about the topic...the topic would be Kinematic equations and gravity free fall but i couldnt find it :(\r<BR>\n" );
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document.write( "There are 2 questions, they interlink because they both have heights above the ground that something took off from\r<BR>\n" );
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document.write( "Question 5 is, A stone is catapulted vertically upwards with a velocity of 25ms-1 from a point 2 metres above the ground. Find, (a) its velocity when it hits the ground and (b) the time it takes to reach the ground.\r<BR>\n" );
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document.write( "Question 7 is a like, a ball is thrown vertically upwards with a speed of 29ms -1. It hits the ground 6 seconds later. By modelling the ball as a particle find the height above the ground from which it was thrown.\r<BR>\n" );
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document.write( "I could do question 1,2,3,4 and 6.\r<BR>\n" );
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document.write( "But 5 and 7 include the height above and theres an extra step i need to do which i cant find, if some one could help me with question 5 a and b, and question 7, then hopefully i can find a link! :D Thanks alot in advance! :D </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77473 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=77473\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the general equation is h=(-gt^2)/2+(v0)t+h0; where h=height, g=gravitational acceleration, v0=initial velocity, h0=initial height, and t=time of flight\r<BR>\n" );
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document.write( "for 5), solve the general equation for t when h=0 (on the ground)<BR>\n" );
document.write( "...then use v=-gt+v0 to find the impact velocity\r<BR>\n" );
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document.write( "for 7), you know all the values except for h0 in the general equation, so just plug in </SPAN>\n" );
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