甲同学说:“静止的物体没有惯性,运动着的物体才有惯性。”乙同


甲同学说:“静止的物体没有惯性,运动着的物体才有惯性。”乙同学说:“物体没有力作用或受到平衡力作用时没有惯性,物体从静止变为运动或从运动变为静止时才有惯性。”这两位同学的说法对吗?为什么?

答案

提示:这两位同学的说法都不正确,因为惯性是一切物体的固有的属性,一切物体在任何时候、任何情况下都有惯性。 

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