This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
When the cardboard is at rest,
       - the magnitudes of the forces from opposite directions acting on it have equal magnitudes.
      - on the other hand, the directions  of the forces acting on it are opposite

2 4 2