Physical Quantities - 1st Sem Physics

Physical Quantities

Measurable quantities.

Fundamental/Based Quantity

These are the quantities that deals with basic measurements and cannot be expressed in other quantities.

Derived quantity

Any quantity which are a combination of fundamental quantities. Obtained by multiplying, dividing or combining fundamental quantities.

Measurement

The process of comparing something with the standard.

Number and Unit

State the two (2) components of measurement:

International System of Units

The modern form of the system of units, abbreviated as SI.

Mass; Length; Time; Current; Temperature; Amount of Substance; Luminous intensity; Volume

Enumerate seven (8) fundamental quantities:

MLTCTALV

m

Unit of Mass:

l

Unit of Length:

t

Unit of Time:

I

Unit of Current:

T

Unit of Temperature:

n

Unit of Amount of Substance:

Iv

Unit of Luminous Intensity:

Kilogram/kg

The SI unit of Mass is _____.

Meter/m

The SI unit of Length is _____.

Second/s

The SI unit of Time is _____.

Ampere/A

The SI unit of Current is _____.

Kelvin/K

The SI unit of Temperature is _____.

Mole/mol

The SI unit of Amount of Substance is _____.

Candela/cd

The SI unit of Luminous Intensity is _____.

English system (Imperial system)

A system of measurement used to measure something in inches, yards, and foot/feet.

Area/m²

A derived quantity with the expression Length x Width.

Volume/m³

A derived quantity with the expression Area x Height.

Density/g/mL or Kg/cm³

A derived quantity with the expression Mass/Volume.

Velocity/m/s

A derived quantity with the expression Displacement x Time.

Acceleration/m/s²

A derived quantity with the expression Velocity/Time.

Force/Newton

A derived quantity with the expression Mass x Acceleration.

Pressure/Pascal

A derived quantity with the expression Force x Area.