In the SI system, the unit of force is called the newton (N) and 1 N is equal to:

The newton (N) is defined as the force required to accelerate a one-kilogram mass by one meter per second squared. This relationship is articulated in Newton's second law of motion, which states that force equals mass times acceleration (F = ma).

To break it down, if you have a mass of 1 kilogram and you want to accelerate it at a rate of 1 meter per second squared, the resulting force exerted will be 1 newton. Thus, the expression for 1 newton is given as:

1 N = 1 kg * (1 m/s²) = 1 kg m/s².

This formulation clearly shows how the unit of force is derived from its fundamental components of mass (kilograms) and acceleration (meters per second squared). It illustrates the direct relationship between the quantity of force and the aspects of mass and acceleration involved.

Other options reflect incorrect formulations of units or do not capture the correct relationship defined in physics. For example, equating newtons to kg/s² does not align with how force is measured within the SI system, as it overlooks the necessary component of acceleration. Similarly, expressing newtons as kg m/s or kg m²/s fails to incorporate acceleration in the