I live in a country with metric system. We use different units of measurement interchangeably because it's easy to do so and we have gotten used to it. I am 1.74m or 174cm tall. The bus stop is 500m or half a kilometer away from my home, etc. While nobody converts 250km to meters, when the value is closer to one, both units of measurement are equally useful and equally used.
Also all physics and engineering formula are designed to get and return metric values. When I see K = 0.5mv^2, I know v is supposed to be m/s and m is in kilograms and the result would be in Joules. If it's E = m*c^2, the same thing could be inferred about it.
I'm curios with all different units of measurement, how do you know when to use which. Is there a convention to always e.g. use ft/s or is it different in each formula?
Also all physics and engineering formula are designed to get and return metric values. When I see K = 0.5mv^2, I know v is supposed to be m/s and m is in kilograms and the result would be in Joules. If it's E = m*c^2, the same thing could be inferred about it.
I'm curios with all different units of measurement, how do you know when to use which. Is there a convention to always e.g. use ft/s or is it different in each formula?