In an elastic collision where object 1 has a mass of 0.50 kg and an initial velocity of 1.00 m/s and where object 2 has a mass of 1.50 kg and an initial velocity of - 1.00 m/s, then what is the initial momentum for object 1 and object 2 1- 1.00; 2 - 2.00 1 - 0.50: 2 - -2.50 1- -1.50: 2 - 0.50 1 - 0.50: 2 - -1.50