Homework Statement
Given a reference frame O' moving at a constant speed $\vec{V}$ in relation to another reference frame O, I want to prove that
##\vec{r_{1B}} \times m_1\vec{v_{1B}} + \vec{r_{2B}} \times m_2\vec{v_{2B}} = \vec{r_{1F}} \times m_1\vec{v_{1F}} + \vec{r_{2F}} \times...