Power is measured in Watts, which is defined as one Joule per second or one Newton meter per second. When discussing a car balanced on a hill, the two primary forces acting on it are gravity, which pulls the car downward, and the normal reaction force from the ground, which pushes upward. Inertia does not act as a separate force in this context; rather, it describes the car's resistance to changes in its state of motion. The discussion clarifies the relationship between power, work, and force, emphasizing that power is not measured in Newtons. Understanding these concepts is essential for analyzing forces and power in physics.
