Asked by Hannah

1) A cave explorer drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.33 s after the stone is dropped. How deep is the hole?

I did 343 / 1.33. Is this correct?
Answered by drwls
No. Dividing a speed by a time gives you an acceleration rate. You have to write an equation for the time it takes to hear the sound. That time consists of two terms: stone drop time and sound travel time.

See "related questions" below
Answered by drwls
This solution to a similar problem may help:
http://www.jiskha.com/display.cgi?id=1337817768
Answered by Hannah
So I would set my problem up as

(13.3 - X/343)^2 = x/1.76

The only thig I am not sure of is how to solve for the x.
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