The radial component can be observed due to the Doppler effect, the tangential component causes visible changes of the position of the object. Representation of radial and tangential components of velocity at different moments of linear motion with constant velocity of the object around an observer O (it corresponds, for example, to the passage of a car on a straight street around a pedestrian standing on the sidewalk).
, if the two objects are moving in the same direction. In some applications the average velocity of an object might be needed, that is to say, the constant velocity that would provide the same resultant displacement as a variable velocity in the same time interval, v( t), over some time period Δ t. Color coding makes it easy to see the velocity of individual notes, and to see the overall range of velocities in a MIDI region. Velocity is defined as the rate of change of position with respect to time, which may also be referred to as the instantaneous velocity to emphasize the distinction from the average velocity. Main article: Equation of motion Average velocity
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