While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 seconds after the signal was sounded. What is the distance to the shore?

Correct Answer: Option C — 360 yards

Sound travels at approximately 1,100 feet per second. The echo travels to the cliff and back, meaning the total distance is 2,200 feet. Dividing by two gives a one-way distance of 1,100 feet. Since 3 feet equals 1 yard, 1,100 divided by 3 equals approximately 366 yards.