Here's why:
* Forces have magnitude and direction: A force is a push or pull that can cause a change in an object's motion.
* Balanced forces cancel each other out: When forces acting on an object are equal in magnitude and opposite in direction, they effectively cancel each other out.
* Net force determines motion: The overall effect of all forces acting on an object is called the net force. When the net force is zero (balanced forces), there is no acceleration, meaning the object remains at rest or continues moving at a constant velocity.
Example: Imagine a book sitting on a table. Gravity pulls the book down, but the table pushes back with an equal and opposite force. These forces are balanced, so the book remains stationary.
