Force is measured in Newtons (N) in the metric system (also known as the International System of Units, or SI).

Here's why:

* Newton's Second Law of Motion: This law states that force (F) is equal to mass (m) multiplied by acceleration (a): F = m * a

* Metric Units:

* Mass (m): Kilograms (kg)

* Acceleration (a): Meters per second squared (m/s²)

* Resulting Unit: kg * m/s² = Newton (N)

Therefore, a Newton is defined as the force required to accelerate a 1 kilogram mass at a rate of 1 meter per second squared.