This document discusses key terms and equations related to rectilinear motion. Rectilinear motion refers to motion along a straight line. Kinematics deals with the motion of bodies without considering forces. Important concepts discussed include displacement, average and instantaneous velocity, acceleration, distance traveled, and equations of motion. Graphical representations of motion using velocity-time graphs are also presented for different scenarios including uniform velocity, variable velocity from rest to a final velocity, and variable velocity between two points.