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2 objects, moving in one dimension, undergo an isolated collision. Object 1 has initial velocity 1...

2 objects, moving in one dimension, undergo an isolated collision. Object 1 has initial velocity 1 m/s. Object 2 has an initial velocity -3 m/s. After the collision, the relative velocity of the 2 objects is vAB=+2 m/s. The reduced mass of the two objects is ⅔ kg. What is the change in total kinetic energy of the entire system during this collision?  Express your answer in units of Joules.

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