Lets say that somewhere in space there is a spaceship that has 2 identical reactors - one in the front and one in the back. The spaceship is stationary relative to earth. We fire both reactors in such a way that spaceship remain stationary relative to earth. Did its mass increased? Did its energy increased?(adsbygoogle = window.adsbygoogle || []).push({});

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# Is this a viable way to increase an object's mass/energy?

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