Action and reaction forces comprise the parts of b) a single interaction
Explanation:
Newton's third law of motion states that:
"When an object A exerts a force (called action) on an object B, then object B exerts an equal and opposite force (called reaction) on object A"
An example of action-reaction pair is when you push on an object: as you push forward on the object (action), the object pushes backward on you (reaction). As we can see, these two forces are part of the same interaction, between you and the object.
It is important to keep in mind that the action and the reaction forces never act on the same object, but always on two different objects.
So, the correct answer is
B) A single interaction
Learn more about Newton's third law:
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