This document discusses force vectors and their properties. It defines vectors as quantities that have both magnitude and direction, while scalars only have magnitude. Vectors are represented graphically by arrows, with length indicating magnitude and angle indicating direction. Common vector quantities include displacement, velocity, and force. The document explains how to add, subtract, and resolve vectors into rectangular components using trigonometric or parallelogram methods. It also discusses resultant forces, Cartesian vectors, position vectors, forces directed along a line, and the dot product.