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

Question

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

Answer 1

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

Answer 2

Thank you Steve!