The horn of a ship is sounded. The captain hears an echo from a cliff $4.0\,\text{s}$ later. The speed of sound is $340\,\text{m s}^{-1}$. How far from the ship is the cliff?
- A$170\,\text{m}$
- B$340\,\text{m}$
- C$680\,\text{m}$
- D$1360\,\text{m}$
Physics 0625 · IGCSE · Sound