Answer to Question #106647 in Mechanics | Relativity for Dina

Question #106647
A stone is released freely from a 200 m tall building. Calculate the final veocity of the stone just before touching the ground. Ignore the friction of air. (use g = 9.81 ms-1)
1
Expert's answer
2020-03-27T09:11:28-0400

From the conservation of energy:


@$0.5mv^2=mgh@$

@$v^2=2gh\to v^2=2(9.81)(200)@$

@$v=62.6\frac{m}{s}@$


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