PHYS 1.2

physical quantities (pq)

something that can be measured

physical quantities are defined by…

how its measured OR how its calculated

distance and time are measured _____.

directly

average speed is measured _____.

by calculating the distance divided by the time

all unites depend on…

fundamental base units

fundamental units include;

time, mass, length, electric current, temp, quantity, luminous intensity

SI units for fundamental base units

time: seconds (s)

length: meters (m)

mass: kilogram (kg)

derived units are…

formed combining base units

average velocity

displacement of an object divided by the time interval the object needs to complete the displacement

unit

a definite value of a physical quantity