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A missile of mass 1.10 X 10^2 kg is fired from a plane of mass 5.05...

A missile of mass 1.10 X 10^2 kg is fired from a plane of mass 5.05 X 10^3 kg initially moving at a speed of 2.85 X 10^2 m/s.

If the speed of the missile relative to the plane is 1.01 X 10^3 m/s, what is the final velocity of the plane?

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