The S.I. derived unit for Force is the Newton (N). Which combination of S.I. base units is equivalent to the Newton?
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.
If a scientist is comparing the energy output of two light bulbs and records their values in joules, which dimensional formula should be used to represent energy in the SI system?