newnewnewnew (id: 61304c99d)

本题目来源于试卷: newnewnewnew，类别为 IB物理学

[填空题]
A 12.0$-\mathrm{kg}$ bucket is lowered vertically by a rope in which there is 163 N of tension at a given instant.
What is the acceleration of the bucket? Is it up or down?     ----待选择----downupward 

参考答案:
空格1: 3.8±2%  空格2: upward 


本题详细解析:

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