Space Time & Motion A.2 Forces & Momentum (id: 803919e93)

本题目来源于试卷: Space Time & Motion A.2 Forces & Momentum，类别为 IB物理学

[单选题]
A trapeze artist is swinging from position A to p/o;jxo(i(rd eosition C as shown in se4c9n/596eq gf2r zmif+nth1 dtyf(the diagram. zt /n2 iqfdhr4me+1t nsfy(g96c5e9f


[Source: Image created using Images by OpenClipart-Vectors from Pixabay - https ://pixabay.com]
The combined mass of the artist and the swing is 70 kg and the length of the rope of the swing is L Which expression gives the kinetic energy at position B?

A. $\frac{L(T-700)}{2}$
B. $\frac{LT}{2}$
C. LT
D. $\frac{L(T+700)}{2}$


参考答案:  A


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