Physics Unit6: Work and Energy (id: 5480ab857)

本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理

[单选题]
A 1.0-kg ball falls to the f sta 4x:,z.tbf7k y9zlloor. When it is 0.70 m above the floorj 2cwwb5ajw q7 62ict8, its potential energy exactly equals its kinetic energy. How fast is j wq8bc cat2j 5w2wi76it moving?

A. 3.7 m/s
B. 6.9 m/s
C. 14 m/s
D. 45 m/s


参考答案:  A


本题详细解析: 暂无

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