Question

A stone is released from rest on a cliff and the sound it makes when it hits the water is heard 17.2 seconds later. If the speed of sound is 343 m/s, how tall is the cliff relative to the ocean?

Answer 1

Answer:

1000m

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Answer 2

Answer:

2949.8 m

Explanation:

So, here, the situation is something like in the figure attached

The sound here is taking 17.2 s to go from the cliff to the ocean and from the ocean back to the cliff

Hence,

2d = (v)(t)

2d = (343)(17.2)

d = (343)(8.6)

=2949.8m

Hence, the cliff is 2949.8 m high relative to the ocean