Here's why:
* Newton's First Law of Motion: This law 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.
* Constant Speed: Constant speed means the object is not accelerating. Acceleration is a change in velocity (speed or direction).
* Balanced Forces: If the forces acting on the object are balanced, they cancel each other out. This means there is no net force acting on the object, and therefore no acceleration.
Example:
Imagine a car driving at a steady 60 mph on a straight road. The engine's force is balanced by the forces of friction (air resistance and tire friction) and any other resisting forces. Since the forces are balanced, the car continues at a constant speed.
