If you are in engineering or physics in the US, you use metric.
There are some beautiful conversions too: 1 m^3 of water is 1000 kg or 1 metric ton. It is also 1000 liters of water.
Wait until you run into the Imperial system's slug, a derived unit of mass, or the blob, the inch-based unit of mass in the Imperial system. 1 blob is 12 slugs.
The metric system is just logical and cleaner than the Imperial system. No crazy conversions e.g. 1 ft = 12 inches, or 1 ft / 5 = (1 ft * 12 inches/ft \ 5 = 2.4 inches = 2 inches and 0.4 inches is almost 25/64 or 13/32nds!!)
1m = 1000mm or 100cm and 1m / 5 = 200mm or 20 cm.
1m / 3 = 0.3 (repeating decimal) m or 333.3 (repeating decimal) mm. No fractions needed.
I can't tell you how many people struggle to read a tape measure down to a 1/16 or 1/32 or in machining to 1/64 and not really grasp it. Uncertainty in measurement is a recipe for disaster in science and engineering.
There are some beautiful conversions too: 1 m^3 of water is 1000 kg or 1 metric ton. It is also 1000 liters of water.
Wait until you run into the Imperial system's slug, a derived unit of mass, or the blob, the inch-based unit of mass in the Imperial system. 1 blob is 12 slugs.
The metric system is just logical and cleaner than the Imperial system. No crazy conversions e.g. 1 ft = 12 inches, or 1 ft / 5 = (1 ft * 12 inches/ft \ 5 = 2.4 inches = 2 inches and 0.4 inches is almost 25/64 or 13/32nds!!)
1m = 1000mm or 100cm and 1m / 5 = 200mm or 20 cm. 1m / 3 = 0.3 (repeating decimal) m or 333.3 (repeating decimal) mm. No fractions needed.
I can't tell you how many people struggle to read a tape measure down to a 1/16 or 1/32 or in machining to 1/64 and not really grasp it. Uncertainty in measurement is a recipe for disaster in science and engineering.