Here's why:

* Newton's Second Law of Motion: This law states that the force (F) acting on an object is directly proportional to its mass (m) and acceleration (a). Mathematically:

* F = m * a

* Units:

* Mass (m) is measured in kilograms (kg).

* Acceleration (a) is measured in meters per second squared (m/s²).

Therefore, the unit of force, derived from the equation, is:

* kg * m/s² = Newton (N)

So, one Newton is the force required to accelerate a one-kilogram mass at a rate of one meter per second squared.