Hello, I tried solving this but to no avail. Maybe someone could help me figure out the answer, thanks. A rock is dropped from a sea cliff and the sound is heard striking the ocean 3.0s later. If the speed of sound is 330 m/s. How high is the cliff? Thanks. I've already tried about everything that I knew. I know that the time it takes the rock to fall to the bottom and the time it takes for the sound to travel back up to the person takes a total of 3s. I tried using the d=v1t + 1/2at^2 formula but that didn't work either. I've thought of and tried to use most formulas, but I don't know how to do this problem. Please help me.