document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1200446>Question 1200446</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A train accelerates steadilv from 4.0 ms^-1 to 20 ms^-1 in 100 seconds.<BR>\n" );
document.write( "a. Calculate the acceleration of the train.<BR>\n" );
document.write( "b. From its initial and final velocities, calculate the average velocity of the train.<BR>\n" );
document.write( "c. Calculate the distance travelled by the train in this time of 100 seconds. </SPAN>\n" );
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document.write( "Part (a)\r<BR>\n" );
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document.write( "I'll use the notation \"mps\" to mean \"meters per second\" aka \"m/s\".\r<BR>\n" );
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document.write( "acceleration = (finalVelocity - startingVelocity)/(change in time)<BR>\n" );
document.write( "acceleration = (20 mps - 4 mps)/(100 s)<BR>\n" );
document.write( "acceleration = (16 mps)/(100 s)<BR>\n" );
document.write( "acceleration = (16/100) m/s^2<BR>\n" );
document.write( "acceleration = 0.16 m/s^2<BR>\n" );
document.write( "This value is exact.\r<BR>\n" );
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document.write( "Answer: <font color=red size=4>0.16 m/s^2</font>\r<BR>\n" );
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document.write( "Part (b)\r<BR>\n" );
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document.write( "average velocity = (startingVelocity + finalVelocity)/2<BR>\n" );
document.write( "average velocity = (4 mps + 20 mps)/2<BR>\n" );
document.write( "average velocity = (24 mps)/2<BR>\n" );
document.write( "average velocity = 12 mps<BR>\n" );
document.write( "average velocity = 12 m/s\r<BR>\n" );
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document.write( "Answer: <font color=red size=4>12 m/s</font>\r<BR>\n" );
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document.write( "Part (c)\r<BR>\n" );
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document.write( "distance = averageVelocity*time<BR>\n" );
document.write( "distance = (12 m/s)*(100 s)<BR>\n" );
document.write( "distance = 1200 m\r<BR>\n" );
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document.write( "Answer: <font color=red size=4>1200 meters</font>\r<BR>\n" );
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document.write( "Further Reading about Kinematic Equations<BR>\n" );
document.write( "<a  rel=nofollow HREF= \"https://www.physicsclassroom.com/class/1dkin/Lesson-6/Kinematic-Equations\">https://www.physicsclassroom.com/class/1dkin/Lesson-6/Kinematic-Equations</a><BR>\n" );
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