Page 5 - Introduction to Physics

1.2 Physical Quantities

Physical Quantities is a physical 1 Base quantities

characteristic that can be measured.
Base quantities are quantities that cannot be
derived
All physical quantities can be classified ___________ in terms of other base quantities.
into two groups :
Symbol
Base quantities
1. ____________________________
Base quantity Symbol S.I. Unit for S.I.
Derived quantities
2. ____________________________ Unit

Length L meter m

Derived quantities 2
Mass m kilogram kg

Derived quantity is one which obtained by
__________________ base quantities by Time t second s
combining
multiplication, division or both these Current I Ampere A

operations. Its unit is derived from a
similar combination of the base units. Temperature T Kelvin K

Derived quantities

(symbol) Expressed in base quantities Derived units

Area, A Area = length x width m 2

Volume, V Volume = length x width x height m 3
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