What is Motion?
At its simplest, motion is a change in position. It’s something we experience constantly – from the movement of our own bodies to the swirling galaxies far, far away. Understanding motion means grasping how things move, how fast they move, and what causes them to move. It’s a fundamental concept in physics and crucial to understanding the world around us.
Describing Motion: Position and Displacement
To effectively describe motion, we need reference points. Position refers to an object’s location relative to a chosen reference point. For instance, a car might be 10 kilometers east of a town.