Physical quality vs. Unit

• A physical quantity is any physical property which can be quantified using numbers

  • E.g. length/distance, time, mass, temperature, speed
• A unit is a standard of measurement of a physical quantity

  1. Length: m, cm, km, inches, light years, yards
  2. Time: s, min, hours, months, years
  3. Mass: kg, g, pounds
  4. Temperature: Celsius, Fahrenheit, Kelvin
  5. Speed: km/h, mph, m.s