Speed: Uniform and Non-Uniform Motion
How fast is it moving — and how do we draw that as a picture?
Big Idea: Speed tells you how much distance a body covers in each unit of time. When the speed never changes, the motion is uniform. When the speed keeps changing, the motion is non-uniform, and we describe the whole trip with an average speed. A graph lets us see all of this at a glance.
By the end you will be able to:
- write and use the speed formula v = s / t,
- work in the SI unit m/s and convert to and from km/h,
- tell uniform motion from non-uniform motion,
- find the average speed of a whole journey,
- read and sketch distance-time and speed-time graphs.