This document defines and distinguishes between distance, displacement, and position-time graphs. It explains that distance is a scalar quantity that measures how far an object travels, while displacement is a vector quantity that measures the net change in position including direction. Position-time graphs can be used to determine an object's displacement and speed over time by plotting its position. The document provides examples comparing distance and displacement using a treasure hunt scenario and position-time graphs. Definitions and examples are included to illustrate these core physics concepts.