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Science test 10/18
| Term | Definition |
|---|---|
| force | a push or a pull |
| vector | with both direction and magnitude |
| magnitude | the strength of the force, or how much force there is |
| net force | the sun of all forces acting on an object |
| balanced forces | forces acting on an object in opposite directions and equal strength |
| unbalanced forces | resultant or NET forces are NOT equal. they always cause the motion of an object to change the speed and/or direction that it is moving |
| newton(N) | unit for force |
| velocity | is the speed AND direction an object is moving |
| speed | is the distance traveled by an object in a certain amount of time |
| reference frame | is a system that uses coordinates or background objects to establish position or measure movement of a point in space |
| contact force | a force that Is applied by objects in contact with each other |
| Newton's 1st law | objects at rest remain at rest and objects in motion will continue to move unless acted on by a force |
| Newton's 2nd Law | the acceleration of an object is determined by the sun of the forces acting on it and the mass of the object |
| Newton's 3rd Law | for every action there is an equal and opposite reaction |
| momentum | is mass in motion |
| acceleration | a change in the direction of a moving object or an increase or decrease in speed |
| inertia | the tendency of the motion of an object to remain constant for both speed and direction |
Created by:
Sara Hill
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