Space Time & Motion A.3 Work Energy and Power (id: 6749ccd70)

本题目来源于试卷: Space Time & Motion A.3 Work Energy and Power，类别为 IB物理学

[单选题]
A builder uses a block and tackle pulley system to lift a bundle of materials of mass 15 kg to the top of a building of height 6 m in 9 s. What is the power delivered to the bundle?

A. 10 W
B. 17 W
C. 100 W
D. 900 W


参考答案:  C


本题详细解析:

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