Energy

1. Work

1.1. Power

1.1.1. Rate at which work is performed

1.1.2. Power = Work/Time

1.1.3. Measured in Watts (W)

1.2. Work = Force x Displacement

1.3. Transfer of energy that occurs when a force makes an object move

1.4. 1. Force must be applied

1.5. 2. Motion must be in same direction as applied force

1.6. Measured in Joules (J)

2. Capacity to do work

3. Law of Conservation of Energy (Energy cannot be created 'nor destroyed)

3.1. Conservative Forces

3.1.1. Gravity

3.1.2. electrical

3.2. Non-Conservative Forces

3.2.1. Friction

3.2.2. Air Resistance

3.2.3. Still conserve energy, energy just becomes thermal

4. Mechanical Energy

4.1. Potential Energy

4.1.1. Due to position or deformation

4.1.2. 4 Types:

4.1.2.1. Gravitational

4.1.2.1.1. U=mgh

4.1.2.1.2. Stored energy from height (ability to fall)

4.1.2.2. Elastic

4.1.2.2.1. object stretched or compressed (springs)

4.1.2.3. Chemical

4.1.2.4. Strain

4.1.2.4.1. Amount of deformation

4.1.2.4.2. Stiffness

4.1.2.4.3. U=1/2kx^2

4.1.3. Represented by PE or U

4.2. Kinetic Energy

4.2.1. Due to motion

4.2.2. Depends on mass & velocity

4.2.3. Represented by KE or K

4.2.4. K=1/2mv^2

5. Measured in Joules (J)

5.1. Joules = Newtons x Meters (J=Nm)