A girl drops a rock from the edge of a cliff and observes that it strikes the bottom 2.1 s later. How high is the cliff?
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A girl drops a rock from the edge of a cliff and observes that it strikes the bottom 2.1 s later. How high is the cliff?
A girl drops a rock from the edge of a cliff and observes that it strikes the bottom 2.1 s later. How high is the cliff? Answer:
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