Force and Pressure

1. What is a force

1.1. push or pull

1.2. capacity to do work or cause a physical change in something

1.3. Types of force

1.3.1. Potential force

1.3.1.1. chemical potential force

1.3.1.2. elastic potential force

1.3.1.3. gravitational force

1.3.1.3.1. mass times gravitational force

1.3.1.3.2. amount of gravity in an object

1.3.2. frictional force

1.3.2.1. How to reduce friction

1.3.2.1.1. lubricants

1.3.2.1.2. ball bearings

1.3.2.2. positive impacts

1.3.2.2.1. makes people able to walk without slipping down

1.3.2.3. negative impacts

1.3.2.3.1. wear and tear

1.3.3. kinetic force

1.3.4. magnetic force

1.3.5. electrical force

1.4. How to measure a force

1.4.1. 1. Determine the mass of a given object .

1.4.2. 2. Determine the object's acceleration.

1.4.3. 5. Multiply the mass's value by the acceleration's value.

1.4.4. use a spring balance

2. Pressure

2.1. The force acting on an area

2.2. How to increase pressure

2.2.1. decrease the surface area

2.3. How to decrease pressure

2.3.1. increase the surface area

2.4. The symbol

2.4.1. p