A stone is dropped from the top of a cliff. The splash it makes when striking the water below is heard 3.5 seconds after it is dropped. How high is

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A stone is dropped from the top of a cliff. The splash it makes when striking the water below is heard 3.5 seconds after it is dropped. How high is the cliff? Assume that the speed of sound in air is 343m/s and g = 9.8 m/s2.

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