本题目来源于试卷: Physics Unit6: Work and Energy,类别为 国际高中通用物理
[单选题]
A force of 10 N is aovfeo2a r:aw,dm :1u;ppz)1: aoj;9al,axr1 gbmcv.eilied horizontally to a 2.0-kg mass on a level surface. The coefficient of kinetic friction between the mass and the surface is 0.20. If the mass is moxcogzvj1a19 ):; i mb ra.,leaved a distance of 10 m, what is the change in its kinetic energy?
A. $20 \; J$
B. $39 \; J$
C. $46 \; J$
D. $61 \; J$
参考答案: D
本题详细解析:
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