• The frictional force remains constant, dependent on the friction, the kinetic friction coefficient, is always the same...

    摩擦力不守恒,它取决于摩擦力动能摩擦系数一直相同

    youdao

  • The frictional force remains constant, dependent on the friction, the kinetic friction coefficient, is always the same...

    摩擦力不守恒,它取决于摩擦力动能摩擦系数一直相同

    youdao

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