This may not help but:
If the box is being pushed at a certain direction and it moves in that direction, that means that the force being pushed on the box is greater that the force the box expells.
___________
Big Force. | | Small force
-------------> | Box | <---
(Person) ___________
--------------------------->
Box moves this way
If the box does not move, then that means that the box is expelling the same amount of force as the person pushing.
___________
Same force. | | Same force
- - - - - -> | Box | <- - - - - -
(Person) ___________
. . . . .
Box stays still
If the box ends up pushing you, then that means that it expells more force than you.
___________
Small Force | | Big force
------> | Box | <----------------
(Person) ___________
<---------------------------
Box moves this way
Really hope this helps since there is no image.
