Object A is moving due east, while object B is moving due north.
They collide and stick together in a completely inelastic
collision. Momentum is conserved. Object A has a mass of mA = 17.0
kg and an initial velocity of v0A = 8.10 m/s, due east. Object B,
however, has a mass of mB = 29.0 kg and an initial velocity of v0B
= 5.20 m/s, due north. Find the magnitude of the final velocity of
the two-object system...