1. The problem statement, all variables and given/known data A student drops a rock down a deep mine shaft, how deep is the mineshaft if he hears the rock hit the bottom 6.5s after droping it from rest? 2. Relevant equations sound in air = 343 m/s g= 9.8 m/s 3. The attempt at a solution cant figure out how to get the answer. Not sure what the correct steps are.