1.4.Vector movement

Material transfer vector

points over time from i.e. increment of the radius vector of a point over the considered period of time

(1.4)

In the case of rectilinear motion, the displacement vector coincides with the corresponding part of the trajectory. From the fact that displacement is a vector, the law of independence of motions that is confirmed by experience follows: if a material point participates in several movements, then the resulting displacement of a point is equal to the vector sum of its displacements, which it accomplishes separately in each of the movements.