It seems there have been different "CGS" units, and the definition of units, specifically in the electrical area, varies between them. You would first have to decide WHICH cgs system you want to work with.
sunday school
cgs means centimeter,gram,second. cgs unit of velocity is cm/s.
CGS Margaret was created in 1915.
CGS Margaret ended in 1919.
Amilcar CGS was created in 1923.
SI . . . . . meter3 CGS . . . . centimeter3
CGS unit of time is Second,s.
it cannot be mixed but it can be convert from SI--> CGS and CGS-->SI
The CGS unit of weight (no longer used) was the gram
What is the unis of stress in cgs system
Kinetic energy= mv2 /2 Units for mass in CGS-gm Units for Velocity in CGS-cm/sec Therefore Unit of KE in CGS=gm(cm/sec)2 = ergs