Chapter 7, Problem 18A

If you hit a wall with a force of 200 N, how much force does the wall exert on you?

To determine

The force that the wall exerts on a person.

Answer to Problem 18A

It will be same as $200\text{N}$ .

Explanation of Solution

Introduction:

As per Newton’s third law of motion, for every force exerted there is an oppositeandequal reaction force.

Now, if a person hits a wall with a force of $200\text{N}$ , then considering Newton’s third law of motion, the wall will exert the force of same magnitude but of opposite direction on the person.

Conclusion:

Hence, the force exerted by the wall on the person is $200\text{N}$ .