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Dennis and Carmen are standing on the edge of a cliff that is h= 10m high....

Dennis and Carmen are standing on the edge of a cliff that is h= 10m high. Dennis throws a basketball vertically upward. At the same time, Carmen throws a basketball vertically downward. Both balls are thrown with the Vo = 5 m/s. How much time does it take (in seconds) for each ball to reach the ground?

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