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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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