From what height did the stone fall if, when falling to the ground, its speed was 70 m / s.
| December 29, 2020 | education
To solve this problem, we write the Law of Conservation of Energy:
En = Ek
m * g * h = m * v ^ 2/2
2gh = V ^ 2
h = V ^ 2 / 2g = 70 * 70/10 = 7 * 70 = 490m
Answer: h = 490m
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