2. The magnitude of the action force is the as the magnitude of the reaction force. For instance, if a person pushes a chair with a force of 50 N, then the chair is pushing back with a magnitude of

Same, 50N

Explanation:

According to Newton's third law, any force exerted on an object is exerted back with the same magnitude. The magnitude of the action force is the same as the magnitude of the reaction force. In the example, the chair would be pushing back with a magnitude of 50N.

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The correct answer is "same; 50 N".

Explanation:

The magnitude of the action force is the same as the magnitude of the reaction force. According to Newton's third law, "for every action force, there exists a reaction force, equal in magnitude and opposite in direction". This applies to any action performed in standard conditions. This the case of a person pushing a chair,  if a person pushes a chair with a force of 50 N, then the chair is pushing back with a magnitude of 50 N.

yes, because even though a theory has a  lot of evidence to support it, it is not always true