Rectilinear motion refers to the movement of an object along a straight path. This type of motion can be described by various parameters, including speed, velocity, and acceleration. In rectilinear motion, the position of the object changes over time, and it can be analyzed using equations of motion. This concept is fundamental in physics and is often studied in relation to other topics such as kinematics and dynamics. Rectilinear motion can be uniform, where the object moves at a constant speed, or non-uniform, where the speed changes over time. Understanding rectilinear motion is essential for analyzing more complex movements.