# How to find distance given echo time. (WAVES)

1. Oct 18, 2011

### misz_sunshine

1. The problem statement, all variables and given/known data
A ship is 220metres from a large cliff when it sounds its foghorn. If the echo time is 0.5s, how far is the ship from the cliff?

2. Relevant equations

Distance=220m
Echo time= 0.5s

3. The attempt at a solution
220*0.5= 110 m

I really don't know.. Help please

2. Oct 18, 2011

### SteamKing

Staff Emeritus
Read the problem statement very carefully.

3. Oct 18, 2011

### misz_sunshine

so the distance would still be 220m since it's an echo? No working out to do?

4. Oct 18, 2011

### DaveC426913

This can't be right. It's a trick question.

Is this the entire question, as written, in your book?

5. Oct 18, 2011

### misz_sunshine

Yes this is how it was given.

6. Oct 18, 2011

### Ahmedbasil

Well, the answer is clearly 220 meters :D. This one made me laugh

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