The newton (N) is the SI unit of force. Which of the following expresses one newton (N) in terms of the fundamental SI units (kilogram, metre and second)?
kg.m/s2
Correct Answer: kg·m/s²
From Newton's second law: F = ma
Units: Force = mass × acceleration = kg × m/s² = kg·m/s²
Therefore, 1 N = 1 kg·m/s²
- kg·m²/s — unit of angular momentum
- kg·m·s — not a standard unit
- kg/m²·s — not a standard unit
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