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Angular Motion
Rotational motion about an axis ( which is perpendicular to its plane).
Angular Motion Units
Degrees
Radians
Revolutions
Radians
Size of the angle subtended at centre of circle by an arc equal to radius.
Types of Joint Angles
Relative and Absolute
Relative Joint Angle
Measured with respect to adjacent segments of limb.
Center of Rotation
The point about which an object rotates.
aka axis
Positive Angular Acceleration
Increasing angular velocity in positive direction
Decreasing angular velocity in negative direction
Negative Angular Acceleration
Increasing angular velocity in negative direction
Decreasing angular velocity in positive direction