015 (part 1 of 3) 10.0 points Two masses undergo a. front-toback collision. C Oi) m 2m The mass m has an initial velocity 2 '01), and the mass 2 m has an initial velocity '00. After the collision, they stick together, forming a. compound system. The initial kinetic energy is 016 (part 2 of 3) 10.0 points The final momentum of the compound system is 1. pf = mvo . 2. pf = 6mvo . 3. pf = 8mvo . 4. pf = 7mvo. 5. pf = 5mvo . 6. pf = 9mvo. 7. pf = 10m vo . 8. pf = 3mvo . 9. pf = 4mvo. 10. pf - 2mvo .017 (part 3 of 3) 10.0 points The final kinetic energy of the compound sys- tem is