Question

do all bodies have the same inertia if not name the factor which determines inertia of a body

Answer 1

no
Mass is the factor which determines inertia of a body..

I hope this will help you..

Answer 2

no all body have different inertia because mass determine the intertia of an body more mass more inertia it means an object like truck can resist its state of motion more than a box we can easiliy move a box but we cant do the same with the truck