- The slope in a distance-time graph represents speed.
- Speed (m/s) = distance (m) / time (s)
- The steeper the line on a distance-time graph, the greater the speed it represents.
- The unit of speed is the metre/second.
- An object moving at a steady speed, travels the same distance every second.
- Speed= distance / time
= 1800 / 60
= 30 m/s
Velocity and Acceleration:
- Velocity is speed in a given direction.
- Acceleration is the change in velocity per second.
- A body travelling at a steady speed is accelerating if its direction is changing.