Question
The S.I. derived unit for Force is the Newton (N). Which combination of S.I. base units is equivalent to the Newton?
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RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is
kg⋅m/s2
Force is defined by Newton's second law as the product of mass and acceleration: \(F = m \times a\).
Mass is measured in kilograms (kg) and acceleration in metres per second squared (m/s2).
Multiplying the units gives \(\text{kg} \times \text{m/s}^2 = \text{kg}\cdot\text{m/s}^2\), which is exactly one newton.
Hence, the newton is equivalent to kg⋅m/s2.
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