# Scalars and Vectors

## Scalar

**Scalar quantities** only have a magnitude or a size.

Examples of scalar quantities include:

- Length
- Area
- Volume
- Speed
- Mass
- Density
- Temperature
- Energy
- Power

## Vector

**Vector quantities** have a magnitude and an associated direction.

Examples of vector quantities include:

- Displacement
- Velocity
- Acceleration
- Momentum
- Force
- Weight

Vectors can be represented by an arrow. The length of the arrow represents the size and the direction of the arrow shows the vector quantity.

- Define a scalar quantity.
- Your answer should include: Size / Magnitude
- Are the following quantities scalar or vector: force, weight and acceleration?
- Vector