An object at a *constant velocity* has no net force acting on it.

Here's why:

* Newton's First Law of Motion (Inertia): This law states that an object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by a net force.

* Net Force: Net force is the overall force acting on an object. If forces are balanced, they cancel each other out, resulting in zero net force.

* Constant Velocity: Constant velocity means both constant speed *and* constant direction.

Why speed alone isn't enough:

* Changing Direction: If an object is moving at a constant speed but changing direction (like a car turning a corner), it's accelerating because its velocity is changing. This means there must be a net force acting on it.

In summary:

An object at constant speed only has no net force if it's also moving in a straight line (constant velocity). Any change in speed or direction means there's a net force at work.