1. This occurs when both the instruments measure the same component of velocity . 2. During a collision only the normal component of velocity changes. 3. Where u _ f, w _ f are the inertial axes components of velocity . 4. The transverse velocity is the component of velocity along a circle centered at the origin. 5. For example, velocity . x = 5; would set the x component of velocity equal to 5. 6. The instruction was to use only the horizontal component of velocity when it reached the horizontal plane at the top. 7. This requires the body components of velocity to be resolved through the heading angle ( \ beta ) into inertial axes. 8. For each component of velocity , two images ( signal and reference ) are required, which typically necessitates two cameras. 9. The u component of velocity is stored in the e and w directions and the v component in the n and s directions. 10. Constraints define the direction of movement of the particle by ensuring there is no component of velocity in the direction of the constraint force.