physics
posted by Anthony .
A missile of mass 1.10 102 kg is fired from a plane of mass 5.50 103 kg initially moving at a speed of 3.15 102 m/s. If the speed of the missile relative to the plane is 1.06 103 m/s, what is the final velocity of the plane?

A missile of mass 110 kg is fired from a plane of mass 5500 kg initially moving at a speed of 315 m/s. If the speed of the missile relative to the plane is 1060 m/s, what is the final velocity of the plane?
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