A nucleus at rest undergoes spontaneous radioactive decayby emitting an electron of momentum 1.73 MeV/c and at right angle to to the direction of electron, a neutrino of momentum 1 MeV/c.Find the direction and momentum of the recoiling nucleus.
Here c is the velocity of light.
The Attempt at a Solution
I CAN do this...but I am wondering if we are to employ the relativistic momentum concept...
Can anyone clarify?