本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 通用国际物理
[单选题]
When a cannon fires a cannonball, the crw3.w8kj u/rg0bxugvto2*e+-i e * amannolnki)) 6iox-gd9g1k an will recoil backward because the
A. energy of the cannonball and cannon is conserved.
B. momentum of the cannonball and cannon is conserved.
C. energy of the cannon is greater than the energy of the cannonball.
D. momentum of the cannon is greater than the energy of the cannonball.
参考答案: B
本题详细解析:
暂无
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