Center of mass rigid body, the gravity forces will not cause the body to rotate, which means the weight of the body can be considered to be concentrated at the center of mass. The linear and angular momentum of a collection of particles can be simplified by measuring the position and velocity of the particles relative to the center of mass. Let the system of particles "P", "i"=1...,"n" of masses "m" be located at the coordinates r with velocities v. Select a reference point R and compute the relative position and velocity vectors, The total linear and angular momentum vectors relative to the
Velocity (software development) more like the concept of directionless “speed” from physics. A third problem with velocity is that it is often misused as a measure of efficiency or team performance. Velocity is a metric of work done, not efficiency. Velocity can be increased by working overtime or adding team members, neither of which necessarily increase efficiency or performance. In summary, velocity is a problematic metric because it is easy to manipulate and often misused as an indicator of efficiency. Velocity (software development) Velocity is a metric for work done, which is often used in agile software development. Measuring velocity is sometimes called