Physics Unit6: Work and Energy (id: c22e1a4ac)

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 pendulum of length 50 cm is pulled 30 cm away from the vertical f) t m*h fw0+ke.2orv klh*k6daxis and r7a pyzztjx2 ii7o+n87 inxf*k+ )j7rr eleased from rest. What will bfka )2 oy rz7*iitpr+nzn87 j+ jxx77ie its speed at the bottom of its swing?

A. 0.50 m/s
B. 0.79 m/s
C. 1.2 m/s
D. 1.4 m/s


参考答案:  D


本题详细解析: 暂无

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