関連ワード:  is friction scalar or vector quantity    is time scalar or vector quantity    is length scalar or vector quantity    is frictional force a scalar or vector quantity    coefficient of friction is scalar or vector quantity    is time interval a scalar or vector quantity    is time period a scalar or vector quantity    path length is scalar or vector quantity    total path length is scalar or vector quantity    is friction scalar or vector  
結果 : is friction scalar or vector quantity