| A | B |
|---|
| Acceleration | The rate at which velocity changes with time; the change may be in magnitude or direction or both |
| Air Drag or Air Resistance | Frictional resistance due to motion through air |
| Free Fall | Motion under the influence of gravitational pull only |
| Friction | The resistive force that opposes the motion or attempted motion of an object past another which it is in contact, or through a fluid |
| Friction | A force that opposes motion |
| Inertia | The property of things to resist changes in motion |
| Inverse Relationship | When two values change in opposite directions. Why type of relationship is this? |
| Kilogram | A SI unit of mass; the mass of 1 liter of water at 4 degrees celcius. The only unit of mass we have used in this chapter |
| Newton's Second Law of Motion | Force = mass x acceleration |
| Newton's Second Law of Motion | The greater the force and the greater the mass the greater the acceleration required |
| Mass | The amount of matter in an object. A measure of inertia |
| Terminal Speed or Terminal Velocity | The speed at which the acceleration of a falling object terminates because air resistance balances it weight. |
| Terminal Velocity | Terminal speed with direction of motion (down for falling objects) |
| Weight | The force due to gravity on an object |
| Volume | The amount of space an object occupies |
| g or 9.8 m/s2 | The contant for the acceleration due to gravity |
| 9.8 m/s2 | The value of g |
| Newton's Second Law | Accleration = Force/Mass |
| Newton's Second Law | Mass =Force/Acceleration |
