A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is1531 m/s, how far away is the cliff?
Distance travelled by a sonar pulse = speed of sound in saltwater time 1531 1.02 1561.62 m Therefore, the distance of cliff from submarine 1561.62 / 2 780.81m
