1.1 - Physical Quantities

What is measurement?

A method to determine the value of a physical quantity

Types of physical quantities

base quantities and derived quantities

A physical quantity must be stated in…

magnitude and unit

What are base quantities?

Physical quantity which cannot be derived from another physcial quantity

Base quantities:

What are derived quantities?

Physical quantities that can be described in terms of base quantities

Derived quantities:

Scalar Quantities

Physical quantities that have magnitude only

Vector quantities

Physical quantities that have both magnitude and direction

Examples of Scalar Quantities and Vector quantities

Type of graph:

Type of graph:

Five important aspects in analyzing graphs

1. Relationship between 2 variables

2. Gradient of the graph

3. Area under the graph

4. Interpolation to determine the value of a physical quantity

5. The extrapolation to make a prediction