Understanding why distance is area under velocity-time line.
Worked examples finding displacement and distance from position-time graphs.
Using position-time graphs and number lines to find displacement and distance traveled.
Using a one-dimensional number line to visualise and calculate distance and displacement.
An introduction to the difference between distance traveled and displacement.
This unit is about how things move along a straight line or, more scientifically, how things move in one dimension. Examples of this would be the movement (motion) of cars along a straight road or of trains along straight railway tracks.
In this chapter, you will learn why it is important to identify a reference frame in order to clearly describe motion. For now, the motion you describe will be one-dimensional. Within this context, you will learn the difference between distance and displacement as well as the difference between speed and velocity. Then you will look at some graphing and problem-solving techniques.