일반물리학 1 · Motion Along a Straight Line · Problem 33
일반물리학 1 — Motion Along a Straight Line: Problem 33
33 A stone is thrown from the top of a building with an initial velocity of 20 m/s downward. The top of the building is 60 m above the ground. How much time elapses between the instant of release and the instant of impact with the ground?
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