Question

which one has greater inertia a stone of mass 1 kg a stone of mass 5 kg

Answer 1

A stone of mass 5 kg will have more inertia because it is directly proportional to the amount of mass possessed by a body..
Hope it helps..

Answer 2

The stone of mass 5 kg will have greater inertia, as inertia is directly proportional to mass as well as velocity.More the mass, more the inertia and vice versa. More the velocity, more the inertia and vice versa.