scince vocab quiz Zigler
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10 terms
Terms | Definitions |
|---|---|
 gravity | a force of attraction between objects that is due to their masses |
| friction | a force that opposes motion between two surfaces that are touching |
| trajectory | the curve described be a projectile, rocket, or the like in its flight |
| speed | the rate at which an object moves; it depends on the distance traveled and the time taken to travel the distance |
| velocity | the speed of an object in a particular direction |
| motion | an objects change in position over time when comparied to a reference point |
| potential energy | the energy of positoin or shape |
| kinetic energy | the energy of motion; this energy depends on its speed and mass |
| acceleration | the rate at which velocity changes; an object accelerates if its speed changes; if its direction changes or if both its speed and direction changes |
| centripital force | ...the force, acting upon a body moving along a curved path, that is directed toward the center of curvature of the path and constrains the body to the path. |
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