When two equal forces act on an object in opposite directions, the object will remain at rest or continue moving at a constant velocity if it was already in motion. Here's why:

* Net Force: The forces cancel each other out, resulting in a net force of zero.

* Newton's First Law: Newton's First Law of Motion states that an object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Since the forces are balanced, there is no unbalanced force to cause a change in motion.

Example:

* Imagine you're pushing a box with a force of 10 Newtons to the right. Someone else pushes the box from the opposite side with a force of 10 Newtons to the left. The box won't move because the forces are equal and opposite, resulting in a net force of zero.

Important Note: This applies only when the forces are perfectly balanced. If one force is slightly stronger than the other, there will be a net force, and the object will accelerate in the direction of the stronger force.