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Velocity and acceleration watch

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    A particle P moves along a straight line so that its distance x from the origin is given by the formula x = 2t^3 - 9t^2 + 12t.
    Find the velocity v and acceleration a of P at any time t. Show that v = 0 when t = 1 and t = 2.
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    (Original post by njr008)
    A particle P moves along a straight line so that its distance x from the origin is given by the formula x = 2t^3 - 9t^2 + 12t.
    Find the velocity v and acceleration a of P at any time t. Show that v = 0 when t = 1 and t = 2.
    Differentiate the function and then substitute the times (velocity = diff of displacement, acceleration = diff of velocity = double diff of displacement).
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    v=dx/dt and a=dv/dt might help...
 
 
 
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Updated: July 17, 2008

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