A clownfish lives in a certain sea anemone. Its position with respect to that sea anemone is 10 cm above the sea floor, 30 cm east and 20 cm north. Thirty seconds later, its position is 25 cm above the seafloor, 50 cm west and 15 cm south. Determine the unit vector of the direction of the displacement vector. Round off your answer to two decimal places only.
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