The quantity can be work or kinetic energy or potential energy. Work is same as the energy.
Work done can be described as energy transferred from and object when a force is applied along a displacement. That is work done is the product of force in the direction of the displacement and the magnitude of the displacement.
Mathematically it can be represented as,
W = F x d
where,
W ⇒ work done
F ⇒ force acting along the displacement
d ⇒ magnitude of displacement
We know,
force = mass x acceleration
∴ the unit of force is kgms⁻²
The unit of work done will be kgms⁻² x m
That is kgm²s⁻²
where m is the unit of displacement that is meter (m)
Hence kgm²s⁻² is the unit for work or energy
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