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Consider an elevator that moves with an operating speed of 2.5m/s. Suppose that a person who boards the elevator on the ground floor gets off on the fifth floor. Assuming that the elevator has achieved operating speed by the time it reaches the second floor and that it is still moving at its operating speed as it passes the fourth floor, determine the momentum change of a person with a mass of 80 kg between the second and fourth floors if each floor is 4m high. In addition, determine the impulse of the person’s weight during the same time interval.

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