A m₁ = 3 kg mass is traveling in the +x-direction with a speed of v₁ = 1.2 m/s and elastically collides with a m₂ = 1 kg mass traveling in the -x-direction at a speed V₂ᵢ = 1.8 m/s Assuming that the masses only move along the x-axis (i.e. 1-D collision), determine the final velocities (i.e. speed and direction) of both masses.
