document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1196739>Question 1196739</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Show the solutions and answer the given questions.<BR>\n" );
document.write( "A. A boat is moving smoothly through the waters when the captain <BR>\n" );
document.write( "noticed a floating log ahead. If the initial velocity of the boat is 15 <BR>\n" );
document.write( "m/s and it takes 5.0 s to slow down to 5 m/s, what was the boat’s <BR>\n" );
document.write( "average acceleration?<BR>\n" );
document.write( "B. What can you say about the acceleration in number 2? What does <BR>\n" );
document.write( "it mean? </SPAN>\n" );
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document.write( "Answer:  -2 m/s^2<BR>\n" );
document.write( "This represents slowing down by 2 m/s per second<BR>\n" );
document.write( "I.e. each second the boat's velocity has gone down by 2 m/s\r<BR>\n" );
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document.write( "Work Shown:<BR>\n" );
document.write( "vi = initial velocity = 15 m/s<BR>\n" );
document.write( "vf = final velocity = 5 m/s<BR>\n" );
document.write( "a = acceleration = unknown and what we want to solve for<BR>\n" );
document.write( "t = number of seconds that elapsed = 5 seconds\r<BR>\n" );
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document.write( "Using one of the four kinematics equations gets us the following<BR>\n" );
document.write( "vf = vi + a*t<BR>\n" );
document.write( "5 = 15 + a*5<BR>\n" );
document.write( "5-15 = 5*a<BR>\n" );
document.write( "-10 = 5*a<BR>\n" );
document.write( "5*a = -10<BR>\n" );
document.write( "a = -10/5<BR>\n" );
document.write( "a = -2\r<BR>\n" );
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document.write( "If you wanted, you can rewrite that original formula as<BR>\n" );
document.write( "a = (vf - vi)/t<BR>\n" );
document.write( "which is the same as saying<BR>\n" );
document.write( "a = (finalVelocity - initialVelocity)/(endTime - startTime)<BR>\n" );
document.write( "effectively we are using something very similar to the slope formula. This is because the acceleration is the rate of change of the velocity. <BR>\n" );
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