| A | B |
|---|
| Force | A push or pull on an object |
| Force | Can cause an object to change motion. |
| Net Force | The sum of all forces acting on an object. |
| Unbalanced force | Net force not equal to zero. |
| Unbalanced force | Cause an object to change motion. |
| Newton | SI unit of force |
| Balanced force | Are equal in magnitude and opposite in direction. |
| Balanced force | Net force equal to zero. |
| Balanced force | Will not cause a change in motion. |
| Friction | Opposes sliding motion of two surfaces. |
| Weilding | Sticking that occurs & are the source of friction. |
| Rolling Friction | Prevents slipping of wheels. |
| Gravity | Attractive force between any two objects that depend on the mass & distance of objects. |
| Universal Law of Gravitation | Force = gravitational constant times the product of the masses divided by the square of the distance between them. |
| Field | A region of space that has a physical quantity at every point. |
| Weight | The gravitational force exerted on an object. |
| Weight Equation | Force of gravity = mass times the gravitational strength constant |
| Newton's First Law of Motion | States that an object moving at constant velocity keeps moving at that velocity unless an unbalanced force acts on it. |
| Newton's First Law of Motion | Law of Inertia |
| Newton's First Law of Motion | An object at rest will remain at rest & an object in motion will remain in motion unless an unbalanced force acts on it. |
| Inertia | The tendency of an object to resist any change in its motion. |
| Newton's Second Law of Motion | Describes how the force exerted on an object, its mass, and its acceleration are related. |
| Newton's Second Law of Motion | Law of Acceleration |
| Newtons Second Law of Motion | a = Net Force / mass |
| Newton's Third Law of Motion | When one object exerts a force on a second object, the second object exerts a force on the first that is equal in strenghth & opposite in direction. |
| Newton's Third Law of Motion | For every action there is an equal but opposite reaction. |
| Force | An interaction between two objects. |
| Free fall | Describes the fall on an object on which only the force of gravity is acting. |
| Acceleration due to gravity | 9.8 meters / second squared |
| Gravitational constant | 9.8 N/kg |
| Air resistance | Frictional like foce that opposes the motion of objects moving through the air. |
| Terminal Velocity | The highest speed a falling object will reach. |
| Weightlessness | A sensation that occurs when there is not force of support on your body. |
