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Forces Vocabb
Vocabulary
Vocab word | Definition |
---|---|
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 |