document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1155930>Question 1155930</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A particle starts from rest and travels in a straight  line so that t seconds after passing a fixed point O,<BR>\n" );
document.write( "its acceleration a m/S^2 is given by a=2(3-e^-t)<BR>\n" );
document.write( "Calculate <BR>\n" );
document.write( "(a)the velocity of the particle when t=2<BR>\n" );
document.write( "(b)the displacement of the particle from O when t=1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #778628 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=778628\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "A particle starts from rest and travels in a straight  line so that t seconds after passing a fixed point O,<BR>\n" );
document.write( "its acceleration a m/S^2 is given by a=2(3-e^-t)<BR>\n" );
document.write( "Calculate <BR>\n" );
document.write( "(a)the velocity of the particle when t=2<BR>\n" );
document.write( "(b)the displacement of the particle from O when t=1<BR>\n" );
document.write( "~~~~~~~~~~~~~~~~\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The post by @rothauserc consists of two parts, and both parts are wrong.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The first part is wrong, since @rothausers MISTAKENLY assumes that the acceleration \"a\" is constant, <BR>\n" );
document.write( "on contrary to the given input info.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The second part is wrong because the average speed is half of the sum <BR>\n" );
document.write( "of the initial and final speed ONLY for UNIFORMLY accelerated move,\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "which IS NOT the case.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );