Question

A stone is dropped from a tower that is 100 meters high. The stone enters a well and continues its fall. If the stone takes 4 seconds to reach the surface of the water in the well, calculate how far the surface of the water is below ground level. Given: g = -9.8 meters/second2.

21.6 meters
50.7 meters
100 meters
110 meters
152.45 meters

Answer 1

100 + x = (1/2(9.8)t^2

x is depth of water level below ground