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A rock is dropped into a deep hole and 2.2 s later the sound of striking the bottom is heard. If the speed of sound is 340 m/s, what is the depth of the hole?
11 years ago

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Steve
see related questions below, and change the numbers as necessary. The key is to separate the 2.2 seconds into the falling time and the return time.
11 years ago
Anonymous
30
10 years ago

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