Imagine a soccer ball sitting still on the ground. Now, two players kick it at the exact same time, but from opposite sides, and both kick with the same amount of force.
Because the forces are equal and opposite (they push in opposite directions), they cancel each other out. This means the soccer ball won't move in either direction. It's like tug-of-war when both teams pull equally hard, and the rope doesn't move.
So, the soccer ball will either stay still or barely move slightly, depending on other small factors like friction or how exactly the kicks happen, but basically, the strong pushes balance out.
This happens because of something called Newton's First Law of Motion: an object will stay at rest or keep moving at the same speed unless acted upon by a force that is not balanced. In this case, the forces are balanced.