Hanna, at rest in her spaceship which is moving past Earth at 0.800c, 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)0.600mn(0.800c)
C)0.800mn(0.800c).
D)1.00mn(0.800c).
E)1.67mn(0.800c).

Question

Hanna, at rest in her spaceship which is moving past Earth at 0.800c, 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)0.600mn(0.800c) 
C)0.800mn(0.800c). 
D)1.00mn(0.800c). 
E)1.67mn(0.800c).

Quizplus · Accepted Answer

The Answer of Hanna, at rest in her spaceship which is moving past Earth at 0.800c, 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)0.600mn(0.800c) 
C)0.800mn(0.800c). 
D)1.00mn(0.800c). 
E)1.67mn(0.800c).

Hanna, at Rest in Her Spaceship Which Is Moving Past