The unit $kg . m^{2} / s^{2}$ is associated with

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Work

Kinetic energy

Potential energy

All of these

answer is D.

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Detailed Solution

The unit

kg . \frac{m^{2}}{s^{2}}

is associated with work, kinetic energy and potential energy.
Work done is the product of force and displacement. The unit of force is newton and the unit of displacement is metre.
Therefore unit of work done

= N \times m

= kg \frac{m}{s^{2}} \times m

= kg \frac{m^{2}}{s^{2}}

Similarly using the formula of potential energy and kinetic energy we got the same result.
Unit of potential energy

= kg . \frac{m}{s^{2}} . m

= kg . \frac{m^{2}}{s^{2}}

Unit of kinetic energy

= kg . \frac{m^{2}}{s^{2}}

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