The linear speed at which we already have a point on an object which is rotating depends on its distance from the centre of rotation. The angular speed which we know is the angle that an object generally moves through in a certain amount of time. The angular speed has units of radians per second rad/s. There are 2π radians in a full circle. At a distance r from the centre of the rotation is a point on the object which has a linear speed that is equal to the angular speed multiplied by the distance r. The unit of linear speed is meters per second, m/s.
The speed which is the linear speed = angular speed x radius of the rotation
v = ωr
v = linear speed (m/s)
ω = angular speed (radians/s)
r = radius of the rotation (m)
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