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Statement of a problem № 10422

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A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff, the rock has a speed of 29 m/s. Assuming that air resistance can be ignored, (a) The initial speed of the rock (b) The greatest height of the rock as measured from the base of the cliff.




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