document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1184351>Question 1184351</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the time it takes to travel 30km for a bus which accelerates uniformly from 40km/hr to 80km/hr. Show your solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #814930 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=814930\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "For a formal solution using basic physics, see the solution from tutor @ikleyn.<br><BR>\n" );
document.write( "For a quick solution for this particular problem using logical reasoning, you can do the following.<br><BR>\n" );
document.write( "(1) The acceleration is uniform from 40km/hr to 80km/hr, so the average velocity/speed is 60km/hr.<br><BR>\n" );
document.write( "(2) 30km at an average speed of 60km/hr takes 30/60= 1/2 hour, or 30 minutes.<br><BR>\n" );
document.write( "ANSWER: 30 minutes<br><BR>\n" );
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