A bumper car with mass m1 = 109.0 kg is moving to the right with a velocity of v1 = 4.9 m/s. A second bumper car with mass m2 = 84.0 kg is moving to the left with a velocity of v2 = -3.6 m/s. The two cars have an elastic collision. Assume the surface is frictionless.
1) What is the velocity of the center of mass of the system?
2) What is the initial velocity of car 1 in the center-of-mass reference frame?