document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=941427>Question 941427</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a car starting from rest moves with a constant acceleration of 10 mi/hr2 for 1 hour, then decelerates at a constant 5 mi/hr2 until it comes to a stop. How far has it travelled? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #573853 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=573853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a car starting from rest moves with a constant acceleration of 10 mi/hr2 for 1 hour, then decelerates at a constant 5 mi/hr2 until it comes to a stop. How far has it travelled?<BR>\n" );
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document.write( "s = at^2/2<BR>\n" );
document.write( "For the 1st hour, s = 10*1/2 = 5 miles.<BR>\n" );
document.write( "It's moving at v = at = 10 mi/hr<BR>\n" );
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document.write( "v = a*t<BR>\n" );
document.write( "t = 10/5 = 2 hours<BR>\n" );
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document.write( "Its average speed for 2 hours is (10 - 0)/2 = 5 mi/hr<BR>\n" );
document.write( "s = 5*2 = 10 miles<BR>\n" );
document.write( "Total = 15 miles<BR>\n" );
document.write( " </SPAN>\n" );
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