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# Forces Vocabb

### Vocabulary

Vocab wordDefinition
Momentum The product of an objects mass and its velocity
Formula for Momentum M=pv
Law of Conservation of momentum The total momentum of any group of objects remains the same unless outside forces also act on the objects
Force A push or a pull that gives energy to an object
Units of force Forces that are measured in newtons (N)
Net Force The total of all the forces acting on an object
Inertia The tendency of matter to resist a change in its motion
Balanced Forces The net force acting on an object is zero
Unbalanced Forces The net force acting on an object is not zero
Magnitude The amount of a measurment
Friction A force that one surface excerts on another when the two surfaces are in contact with each other
Static Friction Friction between non moving objects
Kinetic Friction Friction between moving objects
Sliding Friction Friction between objects that rub of slide against each other
Rolling Friction Occurs when an object moves through a fluid or gas
Fluid Friction Occurs when an object moves through a fluid or gas
Newtons First law of motion Objects at rest will stay at rest and objects in motion at a constant velocity unless acted on by an unbalanced force
Newtons Second law of motion The net force acting on an object in equalto the product of the objects mass and acceleration
Newtons Third law of motion For every action force there is a reaction force that is equal but acts in the oppisite direction
Law of universal Gravity All objects in the universe are attracted to each other strengh of attraction depends on the objects mass and distance
Free fall The motion of an object when gravity is the only force acting on it
Terminal velocity Greatest velocity of a falling object accuers when the force of GRAVITY is equal to the force of FRICTION
Weight A measure of the force of GRAVITY on an object
Mass The object of matter is something
Centripetal Force The force that is pulling an object in a circlular motion towards the center of a circle
Geosynchrosous Orbit Occurs when an object orbits another object at a rate equal to the 2nd objects rotation
Created by: charisma