When a bird filers it wings push air downward. As a result the air pushes back upward on the bird. Which law of motion most applies to the way the wings of a bird beat

Answer 1

The law of motion that most applies to the way the wings of a bird beat is Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. In this case, the action is the bird pushing air downward with its wings, and the reaction is the air pushing back upward on the bird. This interaction between the bird and the air allows the bird to generate lift and stay airborne.