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A simple At wood machine composed of a single pulley and two masses `m_(1)` and `m_(2)` is on an elevator. When `m_(1)`=44.7 kg and `m^(2)`=45.3 kg, it takes 5.0 sec for mass `m_(2)` to descend exactly one meter from rest relative to the elevator. What is the elevator's motion?

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The correct Answer is:
[`2 m//s^(2)` upwards]
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