General Physics www.megalecture

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General Physics Physical

AS level

Quantitiwesw&w.

Marline Kurishingal

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Physical Quantities

Quantitative versus qualitative

? Most observation in physics are quantitative ? Descriptive observations (or qualitative) are usually imprecise

Qualitative Observations How do you measure artistic beauty?

Quantitative Observations What can be measured with the

instruments on an aeroplane?

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Physical Quantities

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measured length

works

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Physical Quantities

Are classified into two types:

? Base quantities ? Derived quantities

Base quantity For example : is like the brick ? the basic building block of a house

Derived quantity For example : is like the house that was build up from a collection of bricks (basic quantity)

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Definitions :-

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