Antineutrino in beta decay, a nucleus emits an electron. A 210Bi (bismuth) nucleus at rest undergoes beta decay to 210PO (Polonium). Suppose the emitted electron moves to the right with a momentum of 5.60 X 10-22 kg m/s. The 21PO nucleus with mass 3.50 X 10-25 kg, recoils to the left at a speed of 1.14 X 10-3 m/s. Momentum conservation requires that a second particle, called an antineutrino, must also be emitted. Calculate the magnitude and direction of the momentum of the antineutrino that is emitted in this decay.