By one dimension, one means motion along a line, or in one particular direction. Think of a car going down a straight road, or a person running on a straight track.
Types of Motion:
1.Translational :An example is a car traveling on a highway.
2.Rotational :An example is the Earth’s spin on its axis.
3.Vibrational :An example is the back-and-forth movement of a pendulum.
The object’s position is its location with respect to a chosen reference point.