document.write( "Question 1166875: A motion of a particle on a straight line is given by displacement function :
\n" ); document.write( "s(t)= -49t + 63t^2 -15t^3 + t^4 for t≥0 where s is in meters and t is in seconds.\r
\n" ); document.write( "\n" ); document.write( "A) when is the particle at rest?\r
\n" ); document.write( "\n" ); document.write( "B) when is the particle moving in the negative direction? \r
\n" ); document.write( "\n" ); document.write( "C) When is the particle slowing down? \n" ); document.write( "
Algebra.Com's Answer #791427 by ikleyn(52786)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "            The plot\r\n" );
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document.write( "        The displacement as a given function of time.\r\n" );
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document.write( "For your convenience, I prepared a PLOT for you showing the given polynomial (the displacement function).\r\n" );
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document.write( "Having even very preliminary understanding of basic conceptions, you can analyze from this plot as many as you can.\r\n" );
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document.write( "In the future, you may use your own graphing calculator or even other website plotting tools for visualization.\r\n" );
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\n" ); document.write( "\n" ); document.write( "You will make it right, if you post your deepest \"THANKS\" to me for my teaching and guiding.\r
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