(4) The total path length of aparticle may be greater or equalto the magnitude of displacementvector. If the direction ofmotion of the particle changes,then total path length traversedin a certain time isgreater than the magnitude ofits displacement during thattime, When the motion, i.e.,displacement is along thesame direction and along thesame direction and along thesame straight line, then thetotal path length is equal tothe magnitude of displacement.