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Forces and Motion
| Term | Definition |
|---|---|
| acceleration | |
| average speed | |
| buoyant force | |
| efficiency | |
| force | |
| inclined plane | |
| mass | |
| motion | |
| pascal | |
| reference point | |
| speed | |
| unbalanced forces | |
| weight | |
| air resistance | |
| balanced forces | |
| centripetal force | |
| fluid | |
| friction | |
| inertia | |
| mechanical forces | |
| net froce | |
| Pascal's principal | the rule that when a force is applied to a confines fluid, the increase in pressure is transmitted equally to all parts of the fluid |
| rolling friction | friction that occurs when an object rolls over a surface |
| static friction | friction that acts on objects that are not moving |
| velocity | speed in a given direction |
| work | force exerted on an object that causes it to move |
| fulcrum | the fixed point at which a lever pivots |
| fluid friction | friction that occurs as an object moves through fluid |
| lever | a simple machine that consists of a rigid bar that pivots about a fixed point |
| newton | a unit of measure that equals to the force required to accelerate 1 kilogram of mass at 1 meter per second per second |
| power | the rate at which work is done |
| wedge | a simple machine that is an inclined plane that moves |
| Archimede's principal | the rule that the buoyant force on an object is equal to the weight of the fluid the object displaces |
| Bernoulli's principal | the rule that a stream of fast moving fluid exerts less pressure than the surrounding fluid |
| compound machine | a device that combines two or more simple machines |
| gravity | the force that pulls objects towards each other |
| machine | a device that changes the amount of force exerted, the distance over which a force is exerted, or the direction in which force is exerted |
| momentum | the product of an object's mass and velocity |
| pulley | a simple machine that consists of a grooved wheel with a rope or cable wrapped around it |
| sliding friction | friction that occurs when one solid surface slides over another |
| terminal velocity | the greatest velocity and object can achieve |