When a force touches a nose, Newton's third law of motion dictates that the nose experiences a reaction force equal in magnitude and opposite in direction to the applied force.
The question: What happens when a force touches a nose in physics? is primarily concerned with understanding Newton's third law of motion. According to Newton's third law of motion, whenever one object exerts a force on another object, the second object experiences a force that is equal in magnitude and opposite in direction to the force exerted by the first object. So, in the case of a force touching a nose, the correct answer is A) The nose experiences a reaction force equal in magnitude and opposite in direction to the applied force. This law is exemplified in everyday experiences such as pushing objects and feeling an equal and opposite push back.