How deep is it?

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A stone is dropped in a well and the splash is heard 1.5 s 1.5s after the stone reaches the surface of the water. If the velocity of sound is 327 m / s 327m/s find the depth of the well in metres.


The answer is 490.5.

Milind Prabhu by milind prabhu , 21, India

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2 solutions

Shreya R
Mar 18, 2014

We know that DISTANCE= SPEED x TIME. We multiply 327 m/s x 1.5 s to get 490.5 as the answer.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

Doesn't the amount of time it takes to the sound to be heard also determine on how far whoever or whatever hears the sound is from the well and if the sound went down and back up the well?

0 Helpful 0 Interesting 0 Brilliant 0 Confused

Moderator: Is this answer reasonable? Why are my queries unanswered? I have sent in many queries but still no answers.

E Koh - 2 years, 2 months ago

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