## MCAT Question A Day - 4/6/14

**The depth of water in the ocean is determined by using sonar signals. Assuming that the speed of sound in water is about 1.5 km/s, and it takes a total of 6 s for a sonar signal to return to the ship after being emitted, what is the estimated depth of the ocean at that point?**

**A.**3.0 km

**B.**9.0 km

**C.**0.25 km