Question

( What ? Physicists often measure the momentum of subatomic particles moving near the speed of light in units of Mevc, where is the speed of light, and I MeV - 1.6 10-13 kg. m/s. Based on this what are the units of momentum for a high-speed subatomic particle in terms of fundamental Sunits? What we the unit of momentum for a high-speed subatomic particle in terms of a newton and another fundamental SI unit? Lol - Need Help?

Answer 1

We have

(a)

MeV Kg.mº/s" c>= m/s Therefore representation of momentum in SI units MeV/c → Kg.m/s

(b)

$\\ \text{as N}\Rightarrow Kg.m/s^2 \\ \text{Therefore representation of momentum in newton and another SI units } \\ \text{MeV/c}\Rightarrow \text{Kg.m/s}\Rightarrow \text{N.s}$