1. The problem statement, all variables and given/known data How deep is the well? Drop a stone and I took 16s to hit the ground level. The air temperature is 20 degrees. Acceleration is 9.8 m/s squared. M=1kg V1=0 m/s Speed of sound= 343.8m/s squared Find how deep the well is. 2. Relevant equations D=t/v I don't really know at all Speed of sound. 3. The attempt at a solution No ideas.