need help figuring out the momentum of the system before AND after collision. It's an inelastic collision, and for this collision, the heavier object collides with the lighter object which is initially at rest The smaller mass is 0.25 kg and the initial velocity is 0 m/s and final velocity is -.25 the larger mass is .45kg and the initial velocity is .4 m/s and final velocity is -.25 m/s please show/explain how you found the answer. Also could you please briefly explain the difference between an elastic and inelastic collision? Thanks!

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