A light spring is sandwiched between two bodies A and B, lying on a smooth floor and connected by a thread. If body A is fixed, then after burning the thread and releasing the spring, body B will move at a speed of 12 m/s, and if body B is fixed, then after burning the thread, body A will move at a speed of 8 m/s. With what velocities will the bodies move after the thread is burned, if they are not fixed?
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