Hanna, at rest in her spaceship which is moving past Earth at 0.800 c, observes a neutron at rest relative to her spaceship decay into a proton, an electron and a neutrino. She notes that the total momentum, , of the decay products is zero after the decay. According to an observer on Earth, the magnitude of the total momentum of the decay products, , is A) 0. B) 0.600m_n(0.800c) C) 0.800m_n(0.800c). D) 1.00m_n(0.800c). E) 1.67m_n(0.800c).

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The Answer of Hanna, at rest in her spaceship which is moving past Earth at 0.800 c, observes a neutron at rest relative to her spaceship decay into a proton, an electron and a neutrino. She notes that the total momentum, , of the decay products is zero after the decay. According to an observer on Earth, the magnitude of the total momentum of the decay products, , is A) 0. B) 0.600m_n(0.800c) C) 0.800m_n(0.800c). D) 1.00m_n(0.800c). E) 1.67m_n(0.800c).

Hanna, at Rest in Her Spaceship Which Is Moving Past