Momentum vs. Inertia

Momentumnoun

(physics) (of a body in motion) The tendency of a body to maintain its inertial motion; the product of its mass and velocity.

Momentumnoun

The impetus, either of a body in motion, or of an idea or course of events. (i.e: a moment)

Momentumnoun

The quantity of motion in a moving body, being always proportioned to the quantity of matter multiplied by the velocity; impetus.

Momentumnoun

Essential element, or constituent element.

Momentumnoun

A property of an activity or course of events, viewed as analogous to forward motion or to physical momentum (def. 1), such that the activity is believed to be able to continue moving forward without further application of force or effort; - often used to describe an increase in the acquisition of public support for a purpose; as, as, the petition drive gained momentum when it was mentioned in the newspapers.

Momentumnoun

an impelling force or strength;

Momentumnoun

the product of a body's mass and its velocity;

Momentum

In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.

Inertianoun

The property of a body that resists any change to its uniform motion; equivalent to its mass.

Inertianoun

(figuratively) In a person, unwillingness to take action.

Inertianoun

(medicine) Lack of activity; sluggishness; said especially of the uterus, when, in labour, its contractions have nearly or wholly ceased.

Inertianoun

That property of matter by which it tends when at rest to remain so, and when in motion to continue in motion, and in the same straight line or direction, unless acted on by some external force; - sometimes called vis inertiæ. The inertia of a body is proportional to its mass.

Inertianoun

Inertness; indisposition to motion, exertion, or action; lack of energy; sluggishness.

Inertianoun

Lack of activity; sluggishness; - said especially of the uterus, when, in labor, its contractions have nearly or wholly ceased.

Inertianoun

a disposition to remain inactive or inert;

Inertianoun

(physics) the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force

Inertianoun

a tendency to do nothing or to remain unchanged

Inertianoun

a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force

Inertianoun

resistance to change in some other physical property

Inertia

Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion.