Question

What is the sum of the forces in an action-reaction pair?

A. always less than zero
B. always greater than zero
C. always equal to zero
D. sometimes less than zero

Answer 1

The sum of the forces in an action-reaction pair is always equal to zero.

Step-by-step explanation:

Newton's third law of motion states that forces always occur in pairs of equal and opposite magnitude. These pairs of forces are known as action-reaction pairs. The sum of the forces in an action-reaction pair is always equal to zero. This means that the magnitudes of the forces are the same, but they act in opposite directions, resulting in a net force of zero.