A a stone is dropped from the top of a 820 m tall building, Ask an Expert

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A. A stone is dropped from the top of a 82.0 m tall building. How far above the ground is the stone 1.80 seconds before it reaches the ground?

B. You observe that a falling stone takes 0.21 seconds to pass a window that is 1.6 meters tall. What is the speed of the stone as it reaches the bottom of the window?

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