What is the final factor that will determine if the vehicle will move?

The final factor that will determine if the vehicle will move is traction. Traction refers to the grip or friction between the vehicle's tires and the road surface. This grip is crucial because it is what allows the vehicle to accelerate, brake, and steer effectively. Without adequate traction, even if the engine is running and power is being supplied to the wheels, the vehicle may not move forward or may skid.

Traction is influenced by various factors such as the type of surface (e.g., asphalt, gravel), tire condition, and the weight of the vehicle. While friction is a component of traction, it is not the sole determinant; therefore, traction is more directly relevant in assessing whether a vehicle can move. The condition of the tires, while important for maintaining good traction, is a contributing factor rather than the decisive one. Weather conditions can also affect traction but ultimately, it is the ability of the tires to grip the road that is critical for movement.