If two equal forces act on an object in opposite directions, the object will remain at rest or continue moving at a constant velocity. This is due to Newton's First Law of Motion, also known as the Law of Inertia.

Here's why:

* Forces are vectors: Forces have both magnitude (strength) and direction.

* Net Force: When multiple forces act on an object, their effects combine. The net force is the overall force acting on the object.

* Equal and Opposite Forces: When two forces are equal in magnitude but opposite in direction, their vector sum (the net force) is zero.

* Zero Net Force: A zero net force means there is no change in the object's motion. If it was at rest, it will stay at rest. If it was moving, it will continue moving at the same speed and in the same direction.

Example:

Imagine you push a box with a force of 10 Newtons to the right. Someone else pushes the box with a force of 10 Newtons to the left. The forces are equal and opposite. The net force on the box is zero, and the box will either remain stationary or continue moving at a constant velocity.