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A particle moves along the x axis. Its position is given by the equation x = 2 x 3t - 4t2 with x in meters and t in seconds. Determine

(a) Its position when it changes direction and

(b) Its velocity when it returns to the position it had at t = 0.

(a) Its position when it changes direction and

(b) Its velocity when it returns to the position it had at t = 0.

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