document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1184930>Question 1184930</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A gazelle is running in a straight line along the x-axis. The graph in the figure shows this animal’s velocity as a function of time. During the first 12.0 s <BR>\n" );
document.write( "Here's the graph\r<BR>\n" );
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document.write( "https://www.studocu.com/en-us/document/carnegie-mellon-university/physics-i-for-engineering-students/week-2-homework-solutions/3574016\r<BR>\n" );
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document.write( "i don't understand how did they got the displacement can someone explain it to me thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #815639 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=815639\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At t=0 the speed was 4.0 and at t=10, the speed is 12 (m/sec)<BR>\n" );
document.write( "But the speed changed over time, in this case linear.<BR>\n" );
document.write( "The displacement is speed*time, so it is the average (for a linear function), which is 8 m/sec, multiplied by the total time (10 sec), or 80 m (note the units).<BR>\n" );
document.write( "This is also the same formula for area of a trapezoid ((1/2) h (b1+b2))<BR>\n" );
document.write( "the last distance goes from 12 m/sec to 0, but it is linear and over those 2 seconds, it is the average of those two values* the time of 2 seconds.  </SPAN>\n" );
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