Fundamental (basic) SI Units 20. Mass 21. Time 22. Length Derived SI Units 23. $$ \mathrm{kg} \mathrm{m} / \mathrm{s}^{2}= $$ $$ \qquad $$ 24. $$ \mathrm{N} \cdot \mathrm{m}= $$ $$ \qquad $$ 25. $$ \mathrm{kg} \mathrm{m}^{2} / \mathrm{s}^{2}= $$ $$ \qquad $$ 26. $$ \frac{J}{S}= $$ $$ \qquad $$ 27. $$ \frac{N}{m^{2}}= $$ $$ \qquad $$ 28. $$ \mathrm{lb} / \mathrm{in}^{2}= $$ $$ \qquad $$

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1. $$ \mathrm{kg} \cdot \mathrm{m} / \mathrm{s}^{2} = \mathrm{N} $$  
  This is the definition of the Newton, the SI unit of force.

2. $$ \mathrm{N} \cdot \mathrm{m} = \mathrm{J} $$  
  A Newton-meter is defined as a Joule, the SI unit of work or energy.

3. $$ \mathrm{kg} \cdot \mathrm{m}^{2} / \mathrm{s}^{2} = \mathrm{J} $$  
  This expression is an alternative form for the Joule, since multiplying a force (in Newtons) by a distance (in meters) gives energy.

4. $$ \frac{\mathrm{J}}{\mathrm{s}} = \mathrm{W} $$  
  Dividing energy (Joules) by time (seconds) gives power, measured in Watts.

5. $$ \frac{\mathrm{N}}{\mathrm{m}^{2}} = \mathrm{Pa} $$  
  A Newton per square meter is defined as a Pascal, the SI unit of pressure.

6. $$ \mathrm{lb} / \mathrm{in}^{2} = \mathrm{psi} $$  
  A pound-force per square inch is commonly abbreviated as psi, a unit used for pressure in certain systems.
1. $$ \mathrm{kg} \cdot \mathrm{m} / \mathrm{s}^{2} = \mathrm{N} $$ 2. $$ \mathrm{N} \cdot \mathrm{m} = \mathrm{J} $$ 3. $$ \mathrm{kg} \cdot \mathrm{m}^{2} / \mathrm{s}^{2} = \mathrm{J} $$ 4. $$ \frac{\mathrm{J}}{\mathrm{s}} = \mathrm{W} $$ 5. $$ \frac{\mathrm{N}}{\mathrm{m}^{2}} = \mathrm{Pa} $$ 6. $$ \mathrm{lb} / \mathrm{in}^{2} = \mathrm{psi} $$

Fundamental (basic) SI Units
20. Mass
21. Time
22. Length

Derived SI Units
23.
24.
25.
26.
27.
28.

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Fundamental (basic) SI Units 20. Mass 21. Time 22. Length Derived SI Units 23. 24. 25. 26. 27. 28.