Laws of Motion - Key terms



ACCELERATION:

A change in velocity over a given time period.

EQUILIBRIUM:

A situation in which the forces acting upon an object are in balance.

FRICTION:

Any force that resists the motion of body in relation to another with which it is in contact.

INERTIA:

The tendency of an object in motion to remain in motion, and of an object at rest to remain at rest.

MASS:

A measure of inertia, indicating the resistance of an object to a change in its motion—including a change in velocity. A kilogram is a unit of mass, whereas a pound is a unit of weight. The mass of an object remains the same throughout the universe, whereas its weight is a function of gravity on any given planet.

MECHANICS:

The study of bodies in motion.

MOMENTUM:

The product of mass multiplied by velocity.

SPEED:

The rate at which the position of an object changes over a given period of time.

VELOCITY:

The speed of an object in a particular direction.

VISCOSITY:

The internal friction in a fluid that makes it resistant to flow.

WEIGHT:

A measure of the gravitational force on an object. A pound is a unit of weight, whereas a kilogram is a unit ofmass. Weight thus would change from planet to planet, whereas mass remains constant throughout the universe.

Also read article about Laws of Motion from Wikipedia

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