Question

Which of the following quantities has not been expressed in proper units?

• A. Stress/strain $= \text{ N/}\text{m}^{2}$
• B. Surface tension = N/m
• C. Energy = kg m/s
• D. Pressure= N/m²

Answer 1

Unit of energy is $\text{kg } \times \text{ }\text{m}^{2}\text{/se}\text{c}^{2}$