Mission NL12 Newton's Third Law
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A fish happily swims through the water due to the marvel of Newton's third law. Identify the two letters corresponding to the action-reaction FORCE pairs which are responsible for the fish's motion. ...
For every action there is an equal and opposite reaction.
Action-reaction force pairs explain much of the locomotion in this world. In the case of a fish, there is the interaction between the fish's fins and the water. Like any interaction, it is a mutual interaction between two objects that results in equal forces on both objects directed in opposite directions.
To answer this question correctly, look for the pair of action-reaction interactions between fish fins and water. The action and reaction statements should involve these same two objects. And the interactions should be directed in opposite directions.
