Discuss the below:
Q. Consider two particles of equal mass m. Determine the system mass for each of the following cases.
(a) Both particles are moving in the x-direction with kinetic energies K=5m.
(b) One particle moves in the y-direction with K=5m and the other moves in the +x-direction with K=5m.
(c) Given that both systems contain two mass-m particles with K=5m, explain any difference between your answers to parts (a) and (b).
Note: in these units c=1, velocity is dimensionless, and thus energy has the same units as mass.