heat is a measure of the average kenetic energy of all the particles in an object

Answer 1

Is this a statement or a question? Heat (Q) is the energy transferred between thermally interacting systems. The parameter used to quantify the average thermal kinetic energy of the particles in a system is temperature, T, not heat, Q:

KE_avg = (3/2)kT

where k is Boltzmann's constant and T is temperature.