For the nuclear reaction, 1 neutron (1/0n) + 10/5B → 7/3L + 4/2He (alpha particle) assume that the initial kinetic energy and momentum of the reacting particles are negligible. Calculate the speed of the alpha particle immediately after it leaves the reaction.
E = mrestc^2
Ek = (mtotal (before) - mtotal (after))c^2
The Attempt at a Solution
I really have no idea because there is no change in mass that I can see, and that is all I had to look for with questions similar to these in this chapter.