Final answer:
When Kiki pushes with 3 N and Jake pushes with 2 N, the box moves towards Kiki because her force is stronger. The box responds to the net force, which is the difference in their forces.
Step-by-step explanation:
When Kiki and Jake push a box from opposite directions, what happens to the box depends on how much force each one of them applies. If Kiki pushes with 3 N of force and Jake pushes with 2 N of force, then the box will move in the direction Kiki is pushing. This is because Kiki is using a stronger force. We can think of this like a little game of tug-of-war where both friends are trying to make the box move to their side; Kiki pulls a bit harder and so the box scoots over to her side!
To understand this better, the box feels both pushes and moves according to which side is stronger. The stronger push 'wins' and the box will move that way. So if Kiki's push is stronger by 1 N (because 3 N minus 2 N gives us 1 N), the box will move towards her. This happens because of something called net force, which is the sum of all the forces acting on the object. In this case, the net force is in Kiki's direction.