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Two rubber objects undergo a collision that we will approximate as being elastic. The first object...

Two rubber objects undergo a collision that we will approximate as being elastic. The first object has mass 12.0 kg, and the second object has mass 12.0 kg. Before the collision, the first object is traveling at 4.00 m/s and the second object is traveling at -4.00 m/s (negative meaning in the opposite direction).

What is the velocity of the second object, after the collision?

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