At time t=0, a particle is located at the point (1,3,1). It travels in a straight line to the point (7,8,9), has speed 5 at (1,3,1) and constant acceleration 61+ 5j + 8k. Find an equation for the position vector r(t) of the particle at time t. *** The equation for the position vector r(t) of the particle at time t is r(t) = i +i+k (Type exact answers, using radicals as needed.)

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