If you express it with a negative sign and forget it represents direction, absolutely! :) It's crucially important that its not directionless! I'm a bit surpri

If you express it with a negative sign and forget it represents direction, absolutely! :) It's crucially important that its not directionless! I'm a bit surprised by your assertiveness. Even if you think I'm being boorish about it (I didn't intend to be, but the downvotes say otherwise), you seem familiar enough with these things to know newton's third law is about vector quantities.