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March 25, 2017

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A ball is thrown horizontally from a cliff at a speed of 15 m/s and strikes the ground 45 meters from the base of the cliff. How high was the cliff (rounded to the nearest meter)

  • Physic - ,

    it took the ball 45/15=3 seconds to travel 45 m horizontally

    In those 3 seconds, it fell 4.9*3^2 = 44.1m, the height of the cliff

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