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March 26, 2017

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A 46.0 kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.85 m/s in 1.07 s. It travels with this constant speed for the next 6.80 s. The elevator then slows down (undergoes a uniform acceleration in the negative y direction) for 1.95 s and comes to rest. What is the acceleration of the man while the elevator is slowing down on its way upwards? Answer in units of m/s2 and use the upward direction as positive

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