At time t 0 a particle is located at the point 4 1 3 It travels in a straight line to the point 1 7 5 has speed 4 at 4 1 3 and consta acceleration 3i 6j 2k 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 Type exact answers using radicals as needed i j k