* Equal in magnitude: They have the same length.
* Opposite in direction: They point in exactly opposite directions.
Example:
Imagine you are pushing a box with a force of 10 Newtons to the right. Someone else is pushing the box with a force of 10 Newtons to the left. The two forces are equal in magnitude and opposite in direction, so the resultant force on the box is zero. The box will not move.
Graphical Representation:
When you draw the two vectors, they will form a closed triangle, with the tail of one vector connected to the head of the other. The resultant vector, which is the vector sum, would be a zero-length vector, represented as a single point.
