http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/dopp.html
remember both out path and in path
Suppose active sonar on a stationary ship is used to determine the speed of a ship that is moving away from it. A sonar ping is emitted at a frequency of 1400Hz and the echo returns with a frequency of 1390Hz.The speed of sound in sea water is approximately 1500m/s.What is the speed of ship that is moving away from the stationary ship?
1 answer
1 answer