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Which equation below best describes the relationship between $\vec{v_1}$, $\vec{v_2}$, and $\Delta\vec{v}$?
A) $\vec{v_1} + \vec{v_2} = \Delta\vec{v}$
B) $\vec{v_1} + \Delta\vec{v} = \vec{v_2}$
C) $\vec{v_2} + \Delta\vec{v} = \vec{v_1}$
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