# infinite chase

**Classical Mechanics**Level 3

Point A moves uniformly with velocity v so that the vector \( \vec{v} \) is continually ”aimed” at point B which in its turn moves rectilinearly and uniformly with velocity u . At the initial moment of time \( \vec{v} \perp \vec{u} \) and the points are separated by a distance l. if v=u then find the distance between them after a very long time