In all parts: assume the the air temperature is 17.8o C, so the speed of sound in air is 342.0 m/s.

Part A. Suppose a ship's foghorn is sounded toward an iceberg, and an echo is heard 6.16 s later. Find the distance from the ship to the iceberg.
d = ? m

Part B. b) Suppose the lab floor is 2.21 m beneath the motion detector. If the detector produces a click and the sound bounces off the floor, how long would it take between the creation of the sound and the echo returning to the sensor?
t = ? s

2 answers

A. So, how far does sound travel in 6.16 seconds? That is the round trip, so the berg is half that far away.

B. same problem in reverse. How long to make a round trip of 2*2.21 meters?

distance = speed * time
time = distance/speed
Thank you Steve!