A person clapped his hands near a cliff and heard the echo after 4 seconds. What is the distance of the cliff from the person when the speed of the sound is 344 m/s?
A person clapped his hands near a cliff and heard the echo after 4 seconds.
so.
the sound traveled twice the distance between him/her and the cliff.
Distance between cliff and person = $$\frac{4}{2} \times 344$$
                         = 688 m
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