The boron isotope 9 B is unstable and disintegrates into a proton and two particles. The

The boron isotope ⁹B is unstable and disintegrates into a proton and two α particles. The total energy released as kinetic energy of the decay products is 4.4 × 10⁻¹⁴ J. In one such event, with the ⁹B nucleus at rest prior to decay, the velocity of the proton is measured to be 6.0 × 10⁶ m/s. If the two α particles have equal energies, find the magnitude and the direction of their velocities with respect to that of the proton.