Assume: Take the speed of sound in air to be 341 m/s.
A bat, moving at 6.3 m/s, is chasing a flying insect.
The bat emits a 47 kHz chirp and receives back an echo at 47.73kHz.
At what speed is the bat gaining on its prey? Answer in units of m/s.
x= velocity of insect
The Attempt at a Solution
I determined the bat is the source, but because the chirp bounds off the insect and returns to the bat, I considered the insect to be the "source" in my equation:
Using the above equation:
then i take the velocity of the bat: