本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 国际高中通用物理
[单选题]
A block of mass M slides down a frictioptka:h*v e qc u7a*)g/nless plane incl)4gafwjp 3045pdkkt m ined at an angle q with the a3jkwf4 t m4)0kpd5p ghorizontal. The gravitational force is directed
A. parallel to the plane in the same direction as the movement of the block.
B. parallel to the plane in the opposite direction as the movement of the block
C. perpendicular to the plane.
D. toward the center of the Earth.
参考答案: D
本题详细解析:
暂无
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