document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=716243>Question 716243</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Velocity and acceleration. Pls help me solve, a vehicle travelling at 90km/hr accelerates at 1.8m/s, calculate the distance it travels before it stops </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #439791 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=439791\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a vehicle travelling at 90km/hr accelerates at 1.8m/s, calculate the distance it travels before it stops<BR>\n" );
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document.write( "acc must be negative, or it won't stop.<BR>\n" );
document.write( "Also, acc = 1.8 m/sec/sec, not m/sec<BR>\n" );
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document.write( "v = 90 km/hr = 90000 m/3600 sec = 25 m/sec<BR>\n" );
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document.write( "time to stop = 25/1.8 = 125/9 seconds<BR>\n" );
document.write( "The average speed is 1/2 of 25 m/sec (25 m/sec at t = 0, 0 m/sec when stopped)<BR>\n" );
document.write( "distance = vt/2 = 25*(125/(9*2)) = 173.6111... meters\r<BR>\n" );
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