At time t= 0, a particle is located at the point (3,3,8). It travels in a straight line to the point (1, 1,9), has speed 4 at (3,3,8) and constant acceleration - 2i - 2j + k. 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+ (Type exact answers, using radicals as needed.)