1. The problem statement, all variables and given/known data A bat, flying at a constant speed of 19.5 m/s in a straight line toward a vertical cave wall, makes a single clicking noise and hears the echo 0.15 s later. Assuming that she continued flying at her original speed, how close was she to the wall when she received the echo? Assume a speed of 343 m/s for the speed of sound. 2. Relevant equations The only equation we were given is speed= change of d/time 3. The attempt at a solution i took the speed of sound 343*.15s to get 51.45 then i took the speed of the bat 19.5*.15s to get 2.93 then i subtracted the two and got 48.52 this doesn't not seem right any suggestions? Thank you !