In SI unit of force ‘Newton’ (N) is given by (where m stands for metre and s stands for second):
1 N = 1 kg/ms²
1 N = 1 kgm/s²
1 N = 1 kg s²/m
1 N = 1 kg m s²
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This question was previously asked in
UPSC NDA-2 – 2015
The SI unit of force, the Newton (N), is defined based on Newton’s second law of motion, which states that force (F) equals mass (m) multiplied by acceleration (a): F = ma. The SI unit of mass is the kilogram (kg), and the SI unit of acceleration is meters per second squared (m/s²). Therefore, 1 Newton is defined as the force required to accelerate a mass of 1 kilogram at a rate of 1 meter per second squared. This gives the relationship 1 N = 1 kg * (m/s²), or 1 N = 1 kgm/s².