Here's why:
* Net Force: The overall effect of all the forces acting on an object is called the net force.
* Balanced Forces: When forces are balanced, the net force is zero.
* No Change in Motion: A net force of zero means the object's velocity (speed and direction) remains constant. This includes being at rest.
Example: Imagine a book sitting on a table.
* Gravity: The Earth pulls the book downward (force of gravity).
* Normal Force: The table pushes back on the book with an equal and opposite force.
These two forces are balanced. The book doesn't move because the net force is zero.
Let me know if you'd like more examples or explanations!
