Question

Inertia what is it ?

Answer 1

lol the tendency to resist the change in state

'state' cud be:
rest
uniform velocity

Answer 2

To quote bill nye the science guy, inertia is a property of matter. This is best conceptualized with newton's 2nd law:
F = ma
As you can see, for a constant F, increasing m (mass) makes a decrease. m and a are inversely proportional to each other. That means that mass resists a change in velocity, v. That's what inertia *does*

Answer 3

It is basically mass, and it is how hard it is to move something.

Answer 4

it is an effect whereby there is a resistance in the change of velocity( i guess whether it is acceleration or retardation)

Answer 5

My guess is that it's a consequence of the finite speed of light.