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Q. A submarine dives 110m at an angle of 8° below the horizontal. What are the horizontal and vertical components of the submarine's displacement? (Suppose that upward and the direction of the submarine's horizontal motion is positive.)

Q. Throughout a race, runner runs 10.0 meters north, turns 45 degrees north of east, and runs 5 meters. Then, after a while, the runner turns due east and runs for 15 meters to finish the race. What is the magnitude and direction of the runner's total displacement?

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