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ENERGY - PART 1
ENERGY WORDS*************
Term | Definition |
---|---|
Force | the push or pull on or by an object |
Gravitational Force | a force of attraction between two bodies, even though the bodies are not touching |
Elastic Force | a force associated with materials, such as rubber bands, that stretch when acted upon |
Newton | metric unit for force |
Weight | measure of gravitational force (units in Newtons) |
Friction | Occurs when two objects in contact rub against each other |
Independent Variable | the variable in an experiment that can be changed or manipulated to determines its influence on the dependent variable |
Dependent Variable | the variable in an experiment that is measured |
Air Friction | also known as drag- occurs when an object moves rapidly through air and influences the speed of the object. |
Spring Scale | a tool used to measure the amount of force of an object- units in newtons |
Work | The result of force times distance. Units will be in Nm |
Surface Area | the amount of an object that is exposed to another object (usually important in air friction) |
Power | The amount of work completed over a period of time. Units as Nm/s |
Energy | the ability to do work |