Motion is defined fundamentally as the change in the position of an object over time relative to a chosen frame of reference. The study of motion is a core component of classical mechanics, which quantifies movement using concepts like displacement, velocity, and acceleration. Displacement represents the straight-line distance between an object's starting and ending points, while velocity describes the rate of change of that position, incorporating both speed and direction. Acceleration, in turn, is the rate at which velocity changes, indicating whether an object is speeding up, slowing down, or changing direction. These physical principles are mathematically described by analyzing the forces acting upon an object, allowing for the prediction and understanding of how objects move through space.