11. The velocity triangles are constructed using these various velocity vectors . 12. Actually, the velocity vector V's magnitude | V | can be any fractional component. 13. This angular motion is quantified by the angular velocity vector . 14. Only sound with parallel collinear phase velocity vectors interfere to produce this nonlinear effect. 15. In-plane and out-of-plane direction is determined by the orbital velocity vector of the system. 16. If a disk spins counterclockwise as seen from above, its angular velocity vector points upwards. 17. The particles next position is calculated by adding its velocity vector to its position vector. 18. Its velocity vector changes over time, in response to the forces acting on the particle. 19. In the limit, pure translation becomes planar movement with point velocity vectors that are parallel. 20. :Air resistance always acts in the opposite direction to the velocity vector of the projectile.
