11. The center of force "'O "'can be chosen as the position vector . 12. The position vector of the centroid of a triangle is the average of the position vectors of its vertices. 13. The position vector of the centroid of a triangle is the average of the position vectors of its vertices. 14. In this frame, the vector \ mathbf { h } is the position vector for the second particle. 15. The solution is a 3d position vector of the particle at time, describing the behavior of the system. 16. Is the acceleration of the " k " particle, the second time derivative of its position vector . 17. For any choice of position vector "'R "', the lattice looks exactly the same. 18. Boldface lowercase Latin letters are used to represent position vectors from the origin to a point in the base space. 19. The motion of an object moving in three-dimensional space is characterized by a position vector and a velocity vector. 20. Where is the position vector of the particle ( radial from the rotation axis ) and the tangential velocity of the particle.
