Question

what does newtons third law describe?
a. the relationship between force, mass, and acceleration
b. how inertia affects the motion of an object
c. action - reaction pairs
d. how friction and the normal force are related

Explanation:

Newton's third law states that for every action, there is an equal and opposite reaction. This directly relates to action - reaction pairs.

• Option A: The relationship between force, mass, and acceleration is described by Newton's second law ($F = ma$).
• Option B: Inertia and its effect on an object's motion is covered by Newton's first law.
• Option D: The relationship between friction and the normal force ($f=\mu N$, where $\mu$ is the coefficient of friction and $N$ is the normal force) is not described by Newton's third law.

Answer:

C. Action - reaction pairs