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Posted by on Thursday, January 20, 2011 at 1:41am.

The position of a particle is given by the function x = ( 6 t^3 - 3 t^2 + 2) m, where t is in s.
(a) At what time or times is vx = 0 m/s? (Enter NONE for t2 if there is only one time.)
Smaller time, t1 =
Larger time, t2 =
(b) What are the particle's position and its acceleration at this time(s)? position at time t1 =
acceleration at time t1 =

position at time t2 =
acceleration at time t2 =

  • Physics - , Thursday, January 20, 2011 at 6:31am

    vx = dx/dt = 18 t^2 -6 t =6t(3t-1)
    that is 0 at
    t = 0 and at t = 1/3
    calculate x at t = 0 and at t = 1/3
    then acceleration = 36 t - 6 = 6(6t-1)
    calculate acceleration at whatever time

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