Question

If I push on the wall with 75 Newtons of force, the wall will push back with ______
Newtons.

Please PLEASE help!!!

Answer 1

Answer:

(F)reaction = - 75 N

where, negative sign shows opposite direction.

Explanation:

This question can be answered using Newton's third law of motion. The Newton's Third Law of Motion states that for every action force there is an equal but opposite reaction force.

(F)action = - (F)reaction

Hence, in our scenario if we consider the 75 Newton force applied on the wall to be the action force then the reaction force of the wall must be equal to it in opposite direction. Therefore, the reaction push of the wall must be equal to 75 N.

(F)reaction = - 75 N

where, negative sign shows opposite direction.

Answer 2

The wall will be pushed back with 75 N of force.

Given data:

The magnitude of force to push the wall is, F = 75 N.

In the given problem, the Newton's third law of motion is applicable. The Newton's Third Law of Motion states that for every action force there is an equal but opposite reaction force. Which means, if object 1 is applying some force on object 2, then object 2 will also apply the force of same magnitude but opposite in direction. These pairs of forces are known as action-reaction forces.

F (action) = - F (reaction)

In our scenario if we consider the 75 Newton force applied on the wall to be the action force then the reaction force of the wall must be equal to it in opposite direction. Therefore, the reaction push of the wall must be equal to 75 N.

$F_{reaction}=-75 \;\rm N$.

Negative sign will show the opposite direction.

Thus, we can conclude that the wall will be pushed back with 75 N of force.

Learn more about the Newton's third law of motion here:

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