假如力的方向与速度方向不同，物体就偏向一边，而作曲线运动。
If the direction of the force is not the same as that of the velocity, the body is deflected sideways and moves in a curved path.
假如力的方向与速度方向不同，物体就偏向一边，而作曲线运动。
If the direction of the force is not the same as that of the velocity, the body is deflected sideways and moves in a curved path.
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