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Nathan's Forces Voc.
Force vocabulary
| Question | Answer |
|---|---|
| Momentum | the product of an object's 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 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 force | the net force acting on an object is zero |
| Unbalanced force | the net force acting on an object is not |
| Magnitude | the amount of a measurement |
| Friction | a force that one surface exerts 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 slide against each other |
| rolling friction | occurs when an object rolls over a surface |
| fluid friction | occurs when an object moves through a fluid or gas |
| newton's first law of motion | objects at rest will stay at rest and objects in motion will stay in motion at a constant velocity unless acted on by an unbalanced force |
| newton's second law of motion | the net force acting on an object is equal to the object's mass and acceleration |
| newton's third law of motion | for every action fprce there is a reaction force that is equal, but acts in the opposite direction |
| law of universal gravitation | all objects in the universe are attracted to each other; strength of attraction depends on the objects' masses and distance from each other |
| freefall | the motion of an object when gravity is the only force acting on it |
| terminal velocity | greatest velocity of a falling object; occurs 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 amount of matter in something |
| centripetal force | the force that is pulling an object in circular motion torwards the center of the circle |
| Geosynchronus orbit | occurs when the an object orbits another object at a rate equal to the 2nd object's rate of motion |
Created by:
weed-nathan
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