A free falling body reaches the Earth’s surface at a speed of 40 m / s. how high is it padolo?

To calculate the desired height, at which the given body was before the fall, we apply the law of conservation of energy: Ek = En and m * V ^ 2/2 = m * g * h, whence h = V ^ 2 / 2g.

Variables and constants: V – speed at the Earth’s surface (V = 40 m / s); g – acceleration due to gravity (g ≈ 10 m / s2).

Calculation: h = V2 / 2g = 40 ^ 2 / (2 * 10) = 80 m.

Answer: The given body began its free fall from a height of 80 m.