1. Power
1.1. the ability to do something or act in a particular way, especially as a faculty or quality
1.2. Formula
1.2.1. P= W / t
1.3. Units
1.3.1. Watts
1.4. Examples
1.4.1. How hard you hit a baseball
1.4.2. How hard your legs have to work when you run
2. Work
2.1. activity involving mental or physical effort done in order to achieve a purpose or result.
2.2. Formula
2.2.1. W= F x d
2.3. Units
2.3.1. Joules
2.4. Examples:
2.4.1. playing volleyball
2.4.2. playing basketball
2.4.3. digging a hole
3. Mechanical Advantage
3.1. measure of the force amplification achieved by using a tool, mechanical device or machine system.
3.2. MA= output force/ input force
3.2.1. or input distance/ output distance
3.3. No units
3.4. Examples:
4. 1st Class Levers
4.1. definition
4.1.1. The force applied to an object or machine to cause motion. first-class lever
4.2. example
4.2.1. Crow Bar, teeter-totter
4.3. units
4.3.1. no units
4.4. formula
4.4.1. no formula
5. 2nd Class Levers
5.1. definition
5.1.1. A long, narrow board equally balanced in the middle on a fulcrum
5.2. units
5.2.1. no units
5.3. examples
5.3.1. wheelbarrow
5.4. formula
5.4.1. no formula
6. 3rd Class Levers
6.1. A lever in which the effort is placed between the fulcrum and the load.
6.2. examples
6.2.1. baseball bat, golf club
6.3. units
6.3.1. no units
6.4. formula
6.4.1. no formula
7. Incline Planes
7.1. definition
7.1.1. flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.
7.2. examples
7.2.1. ramps, sloping hills, plows
7.3. units
7.3.1. no units
7.4. formula
7.4.1. no formula
8. Wedge
8.1. definition
8.1.1. a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them
8.2. example
8.2.1. Blade of a Knife, blade of scissors, blade of axe
8.3. units
8.3.1. no units
8.4. formula
8.4.1. no formula
9. Screw
9.1. definition
9.1.1. a short, slender, sharp-pointed metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place.
9.2. example
9.2.1. Drill, Bolt, Light Bulb
9.3. Units
9.3.1. no units
9.4. formula
9.4.1. no formula
10. Wheel and Axle
10.1. Definition
10.1.1. a simple lifting machine consisting of a rope that unwinds from a wheel onto a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.
10.2. Formula:
10.2.1. no formula
10.3. Units:
10.3.1. no units
10.4. examples
10.4.1. where and handle of a wagon connects to the body
10.4.2. where a bike wheel attaches to the bike
11. Pulley
11.1. Examples
11.1.1. A crane
11.1.2. What you use to pull up a flag
11.2. Definition
11.2.1. a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights
11.3. Formula
11.3.1. no formula
11.4. Units
11.4.1. No units