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 Angular momentum  Angular velocity  Moment of inertia

 Measure of resistance of an object to rotation, and the desire of the body to want to continue to rotate once it has been set in motion. ◦ Mass of object ◦ Distribution of mass around the axis of rotation

 The quantity of rotation a body possesses which reflects the moment of inertia and angular velocity Angular Momentum = Moment of Inertia x Angular Velocity

 Relationship between angular velocity and moment of inertia is inversely proportional.  One goes up the other goes down  Angular momentum must remain constant when the object is in flight and can not change until external force applied.

 Angular momentum can not be changed during flight  If you want to do a quadruple jump you need to generate maximal angular momentum on take off- arms out to the side – generates torque (turning movement)  The further the force is generated from the axis of rotation the larger the torque.

 Once in flight a skater will bring arms into body which decreases moment of inertia and increases angular velocity - so spins faster