| A | B |
|---|
| Lever | Includes an effort arm, resistance arm, and a fulcrum |
| 1st class lever | Fulcrum is between the effort arm and the resistance arm |
| 2nd class lever | resistance arm is between the effort arm and the fulcrum |
| 3rd class lever | effort arm is between the fulcrum and the resistance arm |
| Pulley | consisting of a rope passing over a grooved wheel |
| Wheel-n-axle | consists of a wheel and shaft that work together |
| Inclined Plane | a slanted surface used to raise objects |
| Wedge | a moving inclined plane that has one or two sloping sides, it cuts or forces the material apart |
| Screw | an inclined plane in spiral form |
| Sir Isaac Newton | discovered the Laws of Motion |
| 1st Law of Motion | An object at rest will remain at rest, an object in motion will remain in motion unless acted upon by an unbalanced force |
| 2nd Law of Motion | The acceleration of a body depends upon the unbalanced force and the mass of the object |
| 3rd Law of Motion | For every action there is an equal and opposite reaction |
| Work | When force is applied to n object and the object is moved |
| Units of work | NM-newton-meters |
