关于物体做曲线运动，下列说法中，正确的是_刷题宝

题干

关于物体做曲线运动，下列说法中，正确的是（　　）

A：物体做曲线运动时所受的合外力一定不为零

B：物体所受的合外力不为零时一定做曲线运动

C：曲线运动的加速度一定是变化的

D：物体只可能在变力的作用下做曲线运动

上一题下一题 0.0难度选择题更新时间:2020-03-11 02:02:25

答案(点此获取答案解析）

A

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