## angular velocityThe rate at which a rotating object sweeps out an angle relative to a fixed point. Angular velocity may be measured in radians, degrees, or revolutions per unit time. The average angular velocity ω of an object moving from angle
θ_{1} to θ_{2} in time t,
is (θ_{1} - θ_{2})/t.
Instantaneous angular veolcity is the value approached by ω
as t tends to zero. The direction associated with the angular velocity
of an object is perpendicular to the plane of its motion. The speed v
of an object at a distance r from a fixed point is directly proportional
to the magnitude ω of its angular velocity: v =
rω. ## Related category• CLASSICAL MECHANICS | |||||

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