Marek is trying to push a box of sports equipment across the floor. The arrow on the box is vector representing the force that Marek exerts. What are the forces acting up one the box?

Gravity force (friction towards Marek ).

Explanation:

According to the situation, Marek try to push the box which contains some mass because of sports equipment  

Marek tries to push the box, but gravity tries to the down box on the floor.

So, box and floor create friction towards Marek

.