Abyss
The stone fell into the abyss: 2 seconds after we heard it hit bottom. How deep is the abyss (neglecting air resistance)?
(gravitational acceleration g = 9.81 m/s2 and the speed of sound in air v = 343 m/s)
(gravitational acceleration g = 9.81 m/s2 and the speed of sound in air v = 343 m/s)
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