Define: $(a)$ power $(b)$ work done $(c)$ kinetic energy. Give the $SI$ unit of each.

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(N/A) Power is defined as the rate of doing work or the rate of transfer of energy. Its $SI$ unit is watt $(W)$.
$(b)$ Work done is defined as the product of the force applied on an object and the displacement produced in the direction of the force. Its $SI$ unit is joule $(J)$.
$(c)$ Kinetic energy is the energy possessed by an object due to its motion. Its $SI$ unit is joule $(J)$.

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