Classify the following measures as scalars and vectors :
`20 m//s^(2)`

Answer

To classify the measure `20 m/s²`, we will determine whether it is a scalar or a vector quantity.

### Step-by-Step Solution:

1. **Identify the Quantity**: The measure given is `20 m/s²`. This is a unit of acceleration.

2. **Understand Scalar and Vector Quantities**:
- **Scalar Quantity**: A scalar quantity has only magnitude and no direction. Examples include mass, temperature, and speed.
- **Vector Quantity**: A vector quantity has both magnitude and direction. Examples include velocity, force, and acceleration.

3. **Analyze the Given Measure**:
- The unit `m/s²` (meters per second squared) indicates that this measure is related to acceleration.
- Acceleration is defined as the rate of change of velocity with respect to time.

4. **Determine the Characteristics of Acceleration**:
- Acceleration not only has a magnitude (in this case, `20`) but also has a direction (for example, it could be in the direction of motion or against it).

5. **Conclusion**: Since `20 m/s²` represents acceleration, which has both magnitude and direction, we classify it as a vector quantity.

### Final Classification:
`20 m/s²` is a **vector quantity**.

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