Action and reacti A. act on two different objects

B. have equal magnitude

C. have opposite direction

D. have resultant zero

Newton’s third law states that

“all forces between two objects exist in equal magnitude and opposite direction”

If first object A exerts a force F_A on a second object B, then B simultaneously exerts a force F_B on A, and the two forces are equal in magnitude and opposite in direction.

F_A = −F_B

Hence, the resultant will be zero since the magnitude of force is equal but sign in reverse.