Review of Classical Mechanics

Newton's Laws:
1. Objects at rest remain at rest, in the absence of external forces; objects in motion remain in motion with constant velocity, in the absence of external forces.
2. F = ma
3. For every action, there is an equal and opposite reaction.
Law of Universal Gravitation
Energy:
- Kinetic energy
- Potential energy
- Each conservative force has an associated potential energy
Conserved quantities:
- Energy
- Linear Momentum
- Angular Momentum
Stationary waves can be described by
- amplitude
- wavelength or wave number
- phase
Travelling waves can be described by
- amplitude
- wavelength or wave number
- angular frequency or frequency
- phase
- wave speed
Observers moving relative to each other see events happen in slightly different ways; their descriptions are connected by the Galilean transformations, e.g.
```
           x'  =  x  -  v*t
   
```
Time flows uniformly everywhere.
All objects have a position and velocity.