| A | B |
| Force 1 | A push or a pull on an object |
| Force 2 | Force = Mass * Acceleration |
| Newton 1 | The unit for force symbolized by N |
| Newton 2 | The unit of force named for the scientist, Isaac Newtonm who explained th erelationship between force and motion |
| Friction 1 | THe force that occurs when two surfaces move past each other |
| Friction 2 | The 3 types of friction are rolling sliding and fluid |
| Gravity 1 | The force that pulls objects towards the center of the Earth |
| Gravity 2 | The pull or attraction that an object like the Earth exerts on other objects. The strength depends on the masses of the object and the distance between them |
| Weight-common usage | A measure of how something is.(the same as mass) |
| Weight-Scientific usage | The measure of the gravitational force acting on an object, measured in Newtons. |
| Weight - formula | Weight = mass * gravity |
| Terminal velocity | When air resistance matches the force of gravity and the object falls at a constant velocity |
| Projectile motion | The curved path an object follows when thrown or propelled near the Earth's surface |
| Spring Scale | an instrument that measures force in Newtons |
| Mass | The fundamental concept meaning "How much matter there is in an object" |