Grade 9 Test on Mechanics 20241217 (id: 3c365ff93)

[单选题]
An acorn falls from a tree. Com/v6yx *s fwu2ppare its kinetic energy K, to its potentialpst o1 ba)w+z/ energy U./) topa+bsz 1w

A. K increases and U decreases.
B. K decreases and U decreases.
C. K increases and U increases.
D. K decreases and U increases.


参考答案:  A


本题详细解析: 暂无

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