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The position function of a particle in rectilinear motion is given by s(t) = t3- 12t2+ 45t + 4 for t 0 with t measured

The position function of a particle in rectilinear motion is given by s(t) = t3- 12t2+ 45t + 4 for t 0 with t measured in seconds and s(t) measured in feet. Find the position and acceleration of the particle at the instant when the particle reverses direction. PLEASE INCLUDE UNITS

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