a particle is located at the point (2,7,5). It travels in a straight line to the point (7,2,8), has speed 9 at (2,7,5) and constant acceleration 5i - 5j + 3k. Find an equation for the position vector r(t) of the me t. n for the position vector r(t) of the particle at time t is r(t) = (| ) i+ ( Dj+ (I D k.

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