A neutron initially at rest, decays into a proton, an electron and an antineutrino. The ejected electron has a momentum of `1.4xx10^-26` kg.m/s and the antineutrino `6.4xx10^27` kgm/s. Find the recoil speed of the proton (a). if the electron and the antineutrino are ejected along the same directioin and (b). if they are ejected along perpendicular directions. Mass of the proton `1.67xx10^-27`kg.

Answer

`(sqrt(p_(1)^(2)+p_(2)^(2)))/(m_(p))`=9.4 m/s