motion and space

Motion refers to the change in an object's position over time relative to a reference point or frame of reference. Space is the vast, seemingly infinite, three-dimensional expanse in which all objects and events occur. Together, they describe the universe’s structure: motion indicates how objects move through space, and space provides the arena for this movement. Understanding motion involves measuring speed, direction, and change, while space relates to the dimensions—length, width, and height—that contain everything. Both concepts are fundamental to physics, helping us describe and analyze how objects move and exist within the universe.