Question

to every action there is always an equal and opposite or contrary , reaction [who said the this line?]
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Answer 1

Answer:

Newton

Explanation:

The third law is also more generally stated as: "To every action there is always opposed an equal reaction: or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts." The attribution of which of the two forces is the action and which is the reaction is arbitrary.

Answer 2

Answer:

sir issac newton

hope it will help