In the air, it had an average speed of 16 1616 m/s m/sstart text, m, slash, s, end text. in the water, it had an average speed of 3 33 m/s m/sstart text, m, slash, s, end text before hitting the seabed. the total distance from the top of the cliff to the seabed is 127 127127 meters, and the stone's entire fall took 12 1212 seconds.