In SI unit of force ‘Newton* (N) is given by (where m stands for metre and s stands for second):

The SI unit of force is the newton (N), which is a derived unit defined through Newton's second law of motion, F = ma. According to this law, force is the product of mass and acceleration. The SI base unit for mass is the kilogram (kg), and the SI unit for acceleration is metres per second squared (m/s²). Therefore, one newton is defined as the force required to accelerate a mass of one kilogram at a rate of one metre per second squared. Mathematically, this relationship is expressed as 1 N = 1 kg × 1 m/s², which simplifies to 1 kg·m/s². Other options provided are dimensionally incorrect for force; for instance, kg/ms² or kg·s²/m do not represent the physical relationship between mass and acceleration required to define a newton.