13. Two objects are involved in a completely inelastic one-dimensional collision. The net external force acting on them is zero. The table lists four possible sets of the initial and final momenta and kinetic energies of the two objects. Which is the only set that could occur? Initial Final (Before Collision) (After Collision) Kinctic Kinetic Momentum Energy Momentum Energy Object 1: +6 kg · m/s 15 J +8 kg · m/s 9 J a. Object 2: 0 kg · m/s OJ +8 kg · m/s -2 kg · m/s Object 1: Object 2: 5 J +6 kg · m/s b. 12 J 7J +1 kg · m/s 6 J -8 kg m/s Object 1: -3 kg • m/s 1J 4 J с. Object 2: +4 kg m/s d. Object 1: 0 kg · m/s 3J 11 J Object 2: -8 kg m/s 8 J

13. Two objects are involved in a completely inelastic one-dimensional collision. The net external force acting on them is zero. The table lists four possible sets of the initial and final momenta and kinetic energies of the two objects. Which is the only set that could occur? Initial Final (Before Collision) (After Collision) Kinctic Kinetic Momentum Energy Momentum Energy Object 1: +6 kg · m/s 15 J +8 kg · m/s 9 J a. Object 2: 0 kg · m/s OJ +8 kg · m/s -2 kg · m/s Object 1: Object 2: 5 J +6 kg · m/s b. 12 J 7J +1 kg · m/s 6 J -8 kg m/s Object 1: -3 kg • m/s 1J 4 J с. Object 2: +4 kg m/s d. Object 1: 0 kg · m/s 3J 11 J Object 2: -8 kg m/s 8 J