Two blocks of the same mass 0.5 kg head-on collide on a frictionless horizontal surface. The velocities before the collision are v1 = 1.0 m/s, v2 = -3.0 m/s.
a) What are their final velocities after the collision,
1) if the collision is elastic,
2) if the collision is perfectly inelastic.
b) What is the total momentum of the system?
c) What is the center-of-mass velocity? Does it change during the collision? Does it matter if the collision is elastic or inelastic?