document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1173048>Question 1173048</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (a) What is the average velocity of a car that travels 450 km north in 9.0 hours? show your work answer<BR>\n" );
document.write( "(b) A car brakes from 25 m/s to 16 m/s in 2.0 s. What is its acceleration? show your answer<BR>\n" );
document.write( "(c) A tangent line drawn on a velocity-time graph has a rise of 19 m/s and a run of 4.0 m/s. How large is the acceleration?  show your answer\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #798292 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52782)</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=798292\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
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document.write( "(a)  To find average velocity, divide the traveled distance by the travel time.\r\n" );
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document.write( "     The vector is directed North.\r\n" );
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document.write( "(b)  To find the acceleration, find the difference of velocities and divide it by the elapsed time.\r\n" );
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document.write( "(c)  The \"run\" in this case is NOT 4.0 m/s.    It is 4.0 seconds,   INSTEAD.\r\n" );
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document.write( "     To find the magnitude of the acceleration, divide the rise of the velocity by the elapsed time.\r\n" );
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document.write( "It is very crude error, &nbsp;which you made in part &nbsp;(c) &nbsp;saying that &nbsp;\"the run is &nbsp;4 &nbsp;m/s\".\r<BR>\n" );
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document.write( "So crude, &nbsp;that an expert &nbsp;MOMENTARILY &nbsp;sees that you can not read and understand correctly the kinematic plots.\r<BR>\n" );
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document.write( "By the way, &nbsp;the ability &nbsp;\"to read\" &nbsp;and correctly interpret &nbsp;plots &nbsp;\"distance versus time\", &nbsp;\"velocity versus time\", \r<BR>\n" );
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document.write( "\"acceleration versus time\" &nbsp;is one of important skills in &nbsp;Kinematic as a part of &nbsp;Mechanics.\r<BR>\n" );
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document.write( "I am telling it to you in order for you know how important it is and avoid such mistakes in the future.\r<BR>\n" );
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document.write( "If you have a possibility to exercise more in reading such plots, &nbsp;do not miss it &nbsp;(!)\r<BR>\n" );
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document.write( "Good luck &nbsp;(!)\r<BR>\n" );
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document.write( "Come again to this forum soon to learn something new &nbsp;(!)\r<BR>\n" );
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