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Lesson 2 Chapter 1
Science still...
Term | Definition |
---|---|
Motion | The process of changing positions. |
Reference Point | The starting point used to describe the motion or the position of an object. |
Distance | The total length of your path. |
Displacement | The distance between your initial, or starting, position to your final position. |
Speed | The distance an object moves divided by the time it took to move that distance. |
Velocity | The speed and direction of an object's motion. |
Acceleration | The measure of the change in velocity during a period of time. |
Force | A push or pull on an object. |
Contact Force | A push or pull applied by one object to another object that is touching it. |
Noncontact Force | A force that pushes or pulls an object without touching it. |
Friction | A contact force that resists the sliding motion between two objects that are touching. |
Gravity | A noncontact attractive force that exists between all objects that have mass. |
Balanced Forces | When the net force on an object is 0N, the forces acting on it. |
Unbalanced Forces | When the net force of an object is not 0N, the forces acting upon the object. |