what is average kinetic energy?

Answer 1

Kinetic energy for a single molecule is
Ek=(1/2)mv^2 [m = molecular mass, v = molecular velocity]
The average of all the individual molecular kinetic energies is what you are asking for.
The temperature of a substance is proportional to the average molecular kinetic energy:
(1/2)mv^2 = kT

Answer 2

thanks for all your time and help!!