1. Measurement

2. Introducing Physics
This is the study of matter, energy, forces and their interactions.
It involves the study of natural phenomena and events in quantities which can be measured.
These physical quantities are measured in units.
We use System International (SI) units

3. Some SI Units Physical Quantity Unit Symbol Distance (d) Metre m
Time (t)
Second s
Speed (velocity) (v)
Metres per second
ms-1
Acceleration (a)
Metres per second squared
ms-2

4. Some SI Units Physical Quantity Unit Symbol Mass (m) Kilogram kg
Energy (E)
Joule J
Work (W)
Power (P)
watt W

5. Some SI Units Physical Quantity Unit Symbol Force (F) Newton N
Weight (Fg)
Current (I)
Ampere / amp A
Voltage (V)
volt V

6. Some SI Units Physical Quantity Unit Symbol Electric Resistance (R)
ohms Ω
Pressure
pascal Pa

7. Prefixes You Should Know…
Giga = 109 (billion)
Mega = 106 (million)
Kilo = 103 (Thousand)
Centi = 10-2 (hundredth)
Milli = 10-3 (thousandth)
Micro = 10-6 (millionth)
Nano = 10-9 (billionth)
Pico = (trillionth)