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A 795 kg two-stage rocket is traveling at a speed of 6.90×10^3 m/s away from earth...

A 795 kg two-stage rocket is traveling at a speed of 6.90×10^3 m/s away from earth when a predesigned mass that then move with a speed of 2.38×10^3 m/s relative to each other along the original line of motion. How much energy was supplied by the explosion?
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