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In outer space a rock with mass 9 kg, and velocity <3700, -3000, 3000> m/s, struck...

In outer space a rock with mass 9 kg, and velocity <3700, -3000, 3000> m/s, struck a rock with mass 14 kg and velocity <200, -260, 180> m/s. After the collision, the 9 kg rock's velocity is <3300, -2500, 3500> m/s.

What is the final velocity of the 14 kg rock?

What is the change in the internal energy of the rocks?

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