Question

Rahul measures his height and expresses it in terms of a fundamental unit of the FPS system of measurement. What do you think is the symbol of the unit he used?

• A. $\text{lb}$
• B. $\text{m}$
• C. $\text{s}$
• D. $\text{ft}$

Answer 1

The correct option is D $\text{ft}$

The foot–pound–second system or FPS system is a system of units developed by the British, and was built on three fundamental units:

1. the foot ($\text{ft}$) to express length and distance
2. the pound ($\text{lb}$) to express mass (and also weight)
3. the second ($\text{s}$) to express time

Since Rahul measured his height which is simply the vertical length of his body, he would have to express it in the unit of foot ($\text{ft}$), as he wanted to use the FPS system.