From what height the icicle freely fell if it covered the distance to the ground in 4 seconds.

Task data: free fall (V0 = 0 m / s); t (duration of icicle fall) = 4 s.

Constants: g (acceleration due to gravity) ≈ 10 m / s2.

To find the height of the considered icicle before falling, we apply the formula: h = S = V0 * t + a * t ^ 2/2 = 0 + g * t ^ 2/2 ..

Let’s make a calculation: h = 10 * 4 ^ 2/2 = 80 m.

Answer: The icicle in question began its fall from a height of 80 m.