Note that the Third Law only applies to central forces
. A central force is a force which is exerted by one object on another directed along a line connecting the centers of the two objects. Gravity
and the electrostatic
force are both examples.
Any force which is depends on the velocities of the interacting objects is noncentral, and the third law does not apply. The force between two moving electric charges would be noncentral because the force propagates at the speed of light.