The formula for calculating velocity is v = (xf - xi) / (tf - ti), where v represents velocity, xf is the final position, xi is the initial position, tf is the final time, and ti is the initial time.
The final and initial position of a particle can be determined by observing its movement or trajectory. For example, if the particle is moving along a straight line, its position can be measured at two different points along the line, with one point being the final position and the other being the initial position.
The standard units for velocity are meters per second (m/s) in the metric system and feet per second (ft/s) in the imperial system. However, any units of distance over units of time can be used to express velocity.
A positive velocity indicates that the particle is moving in the positive direction, while a negative velocity indicates that the particle is moving in the negative direction. The direction is determined by the chosen coordinate system.
Yes, velocity can be calculated at any given time as long as the initial and final positions of the particle are known and there is a change in position over a given time interval.