document.write( "Question 1009712: Can I have some assistance on this problem?
\n" ); document.write( " A particle moves along the number line so that it's directed distance from the origin at any given time t is given by s(t) = -2 sin t
\n" ); document.write( " Find the velocity(the rate of change of s) of the particle at t = \"pi\" seconds.
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Algebra.Com's Answer #625181 by Alan3354(69443)\"\" \"About 
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A particle moves along the number line so that it's directed distance from the origin at any given time t is given by s(t) = -2 sin t
\n" ); document.write( " Find the velocity(the rate of change of s) of the particle at t = \"pi\" seconds.
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\n" ); document.write( "v(t) = s'(t) = -2cos(t)
\n" ); document.write( "v(pi) = -2cos(pi) = -2 units/second
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