Two carts with masses m1 = 0.8 kilogram and m2 = 1.2 kilogram are moving toward each other with speeds v1 = 4.5 m/s and v2 = 3.8 m/s. The two carts collide elastically.
a) Determine what is the final speed of mass m1?
b) Determine what is the final speed of mass m2?