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Matter In Motion
Term | Definition |
---|---|
Motion | An objects change in position relative to a reference point |
Speed | The distance traveled divided by the time interval during which the motion occured |
Velocity | The speed of an object in a particular direction |
Acceleration | The rate at which velocity changes over time; an object accelerated if its speed, direction, or both change |
Force | A push or pull exerted on an object in order to change the motion of the object; force has size and direction |
Newton | The SI unit for force (Symbol, N) |
Net Force | The combination of all the forces acting on an object |
Friction | A force that opposes motion between two surfaces that are in contact |
Gravity | A force of attraction between objects that is due to their masses |
Weight | A measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe |
Mass | A measure of the amount of matter in an object |
Inertia | The resistance of any physical object to any change in its state of motion. It is the tendency of objects to keep moving in a straight line at a constant velocity |