Scalar
Has magnitude
No direction
Examples
- Distance
- Speed
- Time
- Mass
- Energy
- Temperature
- Pressure
Vector
Has magnitude
Has direction
Examples
- Force
- Weight
- Velocity
- Acceleration
- Momentum
- Gravitational acceleration
- Electric field strength
Vector operations
Addition
Join both vectors head to tail,
draw line from a to b
Subtraction
Join both vectors head to head,
draw line from a to b (minuend to subtrahend)
Vector resolution
Any vector can be represented by two perpendicular vector components
Resolve towards angle: cosine
Resolve away from angle: sine