Distance-time graphs show distance on the vertical axis and time on the horizontal axis. The gradient of a distance-time graph represents speed because gradient = \( \frac{\text{change in ...

The speed is \( \frac {20}{10} = 2~m/s\). Key fact The gradient of a distance-time graph represents speed. When displaying a journey, the vertical axis will often represent the distance from a ...

Abstract: Multi-functional measurement of absolute distance, velocity, vibration, and imaging with one sensor is rare but important in industrial applications. In this article, a fusion light ...