本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 IB数学
[问答题]
Can two vectors of unequal mt9hm 32a+uu pcagnitu ke4er, uwj5xqah) n-2de add up to give the zero vector? Can three unequal vectors? Under what condiae 4j,5 ux-whrekn)q 2tions?
参考答案: Two vectors of unequal magnitude can never add to give the zero vector. However, three vectors of unequal magnitude can add to give the zero vector. If their geometric sum using the tail-to-tip method gives a closed triangle, then the vector sum will be zero. See the diagram, in which $\overrightarrow{\mathbf{A}}+\overrightarrow{\mathbf{B}}+\overrightarrow{\mathbf{C}}=0$ 
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