what is inertia?

Answer 1

A tendency to do nothing or to remain unchanged.

Simple answer to the simple question.

Answer 2

Inertia is the property of mass that makes it keep on doing what it's doing. The more mass, and thus inertia, an object has, the more resistant it will be to changes in motion.
Inertia is the reason it takes force to make an object start or stop, and why you go flying off a merry go round if you don't hang on.

Answer 3

Inertia is the body to remain at rest ie to resist acceleration

Answer 4

When an object is at rest in a frame of reference, it will be always at rest unless a force acts on it.

Assuming no friction, different forces produce different acceleration on one and the same object initially at rest.

If the same force is applied first on an object A and then on two objects A and B which are bound together and which are similar in all respects, the acceleration is halved.

This property of any object is called ‘mass’ of the body which is at rest.

In the case of moving objects, experiments shows that the quantity momentum is the factor that is important rather than mass alone to determine the force needed to change the state of motion. ( Newton’s second law)

Thus different bodies which are at rest are having different masses. Inert means static, or still. The measure of Inertness is Inertia and in the case of bodies at rest it is the mass which measures inertia. Or we can say inertia and mass are one and the same.

However for objects moving with uniform speed, the inertia is measured by it momentum. Momentum is the inertia of moving bodies. Here, inert means that the speed is constant (not changing) - inert.


For rotational motion, when an object is at rest, in order to rotate it, the moment plays an important role.

The moment of mass is the measure of the Inertia for rotational motion of objects which are at rest.

For bodies moving with uniform rotational speed the angular momentum ( moment of momentum) is the measure of the Inertia.

The laws related are

The conservation of mass for bodies at rest ( rotational and translational motion)

The conservation of momentum for bodies at translational motion.

The conservation of angular momentum for bodies in rotational momentum.

These three laws tell us what is Inertia.

Answer 5

inertia is the property of matter which manifests itself as a resistance to any change in the motion of a body. Thus when no external force is acting, a body at rest remains at rest and a body in motion continues moving in a straight line with a uniform speed

Answer 6

There's two types of mass: inertial mass (or simply inertia) and gravitational mass. Inertial mass is a numerical quantity describing an object's resistance to acceleration as seen in F = ma. Gravitational mass is a numerical quantity that determines how strong gravity is for that object as seen in F = GMm/R^2. One of the great mysteries of physics is why these two values are always equal!

Answer 7

Newtons 1st law of motion. An object in motion tends to remain in motion in a straight line until a force acts on it.
An object at rest tends to stay at rest until a force acts on it.
This is inertia, the tendency of an object to continue in its state of motion.

Answer 8

inertia is part of one of the laws of motion- whenever something is acted upon, there is an oposing foce that is equal or lesser. thats why when you kick a ball, you can feel it.

your welcome for me doing your homework!! lol

x0x0 BabiiBrownie818♥



and, for all u who say its that an object thats not in motion will not go in motion until acted upon by an outside force, that is the 1st law of motion, not inertia.

Answer 9

well i remember is inertia is lazy

i remember i science told me ...........

i have a big inertia

Answer 10

I'd answer but just can't seem to change my attitude and disposition right now.