Question

Iron and wood of same size and same volume which have highest inertia?why?

Answer 1

I think its iron .....bcoz it is heavier than wood and has a great tendency to remain in rest than wood

Answer 2

Mass = Volume × Density

For same size and volume mass is directly proportional to density.
Density of iron is more than that of wood.
Hence iron is massive.

Mass is the measure of Inertia and is directly dependent.
Hence iron has more inertia than that of wood.