A ship of mass 1.84 X 10⁶ kg is pulled on by two tugboats. Tugboat one exerts a force of 1.60 X 10⁴ N at an orientation of 60 ^o north of east. Tugboat two exerts a force of 1.70 X 10⁴ N at an orientation of 45 ^o south of east. What is the acceleration of the ship in unit vector notation?