In other words,:formula_97Note that:formula_98This has the form of formula_99 so we can set:formula_100Then,:formula_101::formula_102::formula_103where formula_104 is the total momentum, "M" is the total mass and formula_105 is the center of mass.
In other words,: formula_129Note that: formula_130::: formula_131This has the form of formula_132 so we can set: formula_133Then,: formula_134:: formula_135:: formula_136where formula_137 is the total momentum, "M" is the total mass and formula_138 is the center of mass.