Engineering Board Exam Reviewer · Physics · medium
A person hears an echo 3 s after shouting toward a cliff. If sound travels at 340 m/s, how far is the cliff?
- 1020 m
- 510 m
- 113.3 m
- 340 m
Answer
B. 510 m
Solution
The sound travels to the cliff and back: d = vt/2 = 340(3)/2 = 510 m.
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