A photon with a wavelength of 3.50 x 10-13 m strikes a deuteron, splitting it into a

Question:

A photon with a wavelength of 3.50 x 10-13 m strikes a deuteron, splitting it into a proton and a neutron.
(a) Calculate the kinetic energy released in this interaction.
(b) Assuming the two particles share the energy equally, and taking their masses to be 1.00 u, calculate their speeds after the photodisintegration.