[熱身賽第一輪] 角動量守恆 [Warm-up Round 1] Conservation of Angular Momentum

unit: Energy and Momentum of Rotating Systems topic: Conservation of Angular Momentum learning objective: Use conservation of angular momentum to describe system behavior. essential knowledge: The total angular momentum of a system about a rotational axis is the sum of constituent angular momenta. Angular momentum is conserved unless an external torque acts; angular impulses exerted between interacting objects are equal and opposite (Newton’s third law).