Answer to Question #255830 in Physics for OmarSMPX

Question

Explain what this symbol ≡ is. And how we use it during learning physics.

Give examples how does ≡ work and how to use.

Please give full explanation and examples how to use it.

Answer 1

This symbol is called triple sign and means equivalence. For example, we can't write "10 m/s = 36 km/h" because this is not true mathematically. However, we can write "10 m/s ≡  36 km/h" because 10 m/s are equivalent to 36 km/h because this is the same velocity, but in different units of measurement.