Force can be applied in either same direction or different direction
Force Applied in Same Direction
Force Applied in Same Direction add to one another
Example
If one person pushes a heavy box,it is more difficult
But if 2 person push a heavy box,it is easier
Force Applied in Different Direction
In this case, net force is difference between 2 forces
Example
If 2 person push box in opposite direction,box will not move
(as both forces are equal)
But if one person is stronger than another and put more force,
It will move towards direction of weaker person
Another example is tug-of-war game
Tug-of-War Game
It is a game in which 2 groups pull the rope in opposite directions
Example
If 2 groups pull the the rope in opposite direction,rope will not move
(as both forces are equal)
But if one group is stronger than another and pull with more force
It will move towards the direction of the stronger group
