Physics Unit6: Work and Energy (id: f57b8252c)

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]
An acorn falls from a tree. ywutq0d: ;1)6np g rgoCompg7vb*q4odbs n//o jq /dn3,mx are its kinetic energy K, to its potential energy U/xdo,bj os/4nq*qg dn/mbv3 7.

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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