Question

question 23 of 29 which of the following describes an action - reaction pair? a. the moons gravity pulls on earth, and your gravity pulls on the moon. b. you push on a wall, and the wall pushes back on you. c. a cup pushes down on a table, and the table pushes down on the ground. d. you sit on a chair, and the chair is pulled down by gravity.

Explanation:

According to Newton's third - law, an action - reaction pair consists of two forces that are equal in magnitude, opposite in direction, and act on two different objects. In option B, when you push on a wall (action force), the wall pushes back on you (reaction force), which is an action - reaction pair. Option A has forces involving different objects but not the correct pair related to a single interaction. Option C has forces that are not an action - reaction pair as they don't act between two directly interacting objects in the required way. Option D has two forces acting on the chair and not an action - reaction pair between two interacting objects.

Answer:

B. You push on a wall, and the wall pushes back on you.