**SPEED AND VELOCITY**

CONTENT

- The Concepts of Distance, Speed, Velocity and Uniform Speed/Velocity
- Calculations on Speed and Velocity
- Distance-Time Graph, Displacement-time Graph

**The Concepts of Distance, Speed, Velocity and Uniform Speed/Velocity**

### 1. **Distance** (s)

This is the separation or space between two points. It is measured in meters and it is a scalar quantity.

### 2. **Displacement** (s)

It is distance in a specified direction. It is a vector quantity and it is measured in meters.

### 3. **Speed** (v)

It is the rate of change of distance moved with time. The unit is m/ and it is a scalar quantity.

\(Speed = \frac{distance}{time} \\ v = \frac{s}{t} \)

#### (a) **Uniform speed**

It is obtained if the rate of change of distance with time is constant or when a body travels equal distances in equal time intervals.

#### (b) **Average speed**

Average speed is the total distance travelled divided by the total time taken.

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