according to newton’s 3rd law of motion , the strength of a reaction is the strength of the action force

Equal

Explanation:

According to Newton's third law of motion, the strength of a reaction is equal and opposite to the strength of the action force.

Newton's third law of motion states that "action and reaction forces are equal in magnitude but opposite in direction". Therefore, if an object exerts a force of magnitude KN on a body. The body will in return exert the same amount of force back on the object. The law gives us an idea that force is paired in their action.