Here is a scenario I have cooked up that seems to violate the law of conservation of momentum. Take two clumps of matter of equal weight. Give one a positive charge x, and the other a negative charge 2 x. On a stationary spaceship ( p = 0 ) release the two charged clumps of matter. They accelerate towards one another according to coulomb's law. The acceleration on both is equal since forces are equal and opposite. Both emit braking radiation (bremsstrahlung). But the negative charge is twice as large as the positive charge and so it releases twice as much energy due to bremsstrahlung. As the two clumps come into contact the positively charged clump has more momentum since it has not lost any kinetic energy to bremsstrahlung. Net momentum has been created. Surely there is some crazy physics involved, because according to basic physics there is creation of momentum in this extremely simple scenario. Please Register or Log in to view the hidden image!