Two guys, A and B are in tall building window cleaning 'elevators' that hang by a cable over the side of a building. The elevator is lifted up and down by the cable that is attached to a motor on the top of the building. Let's suppose (miraculously) that both the cable and the pulley over the side have no mass and that the pulley and motor operate without any frictional loss. (c) Somewhere around the third floor, at a height of 95 m above the ground, guy A drops his car keys. They fall with negligible air friction to the ground. What is the keys' speed as they hit the ground?

At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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Two guys, A and B are in tall building window cleaning 'elevators' that hang by a cable over the side of a building. The elevator is lifted up and down by the cable that is attached to a motor on the top of the building. Let's suppose (miraculously) that both the cable and the pulley over the side have no mass and that the pulley and motor operate without any frictional loss. (c) Somewhere around the third floor, at a height of 95 m above the ground, guy A drops his car keys. They fall with negligible air friction to the ground. What is the keys' speed as they hit the ground?

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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