Module 1 Flashcards
1
Q
What is a physical quantity?
A
It is a property of an object or phenomenon that can be measured
2
Q
What are the 7 SI base units?
A
metre (m), kilogram (kg), second (s), ampere (A), kelvin (K), and mole (mol)
3
Q
What are derived units?
A
They can be derived from the base units and the equations relating derived quantities to the base quantities.
4
Q
What is a scalar quantity?
A
A measurement which has magnitude but no direction
5
Q
What is a vector quantity?
A
A measurement which has a magnitude and a direction
6
Q
Give an example of a scalar quantity?
A
Length, mass and time
7
Q
Give an example of a vector quantity?
A
displacement, velocity and acceleration
8
Q
Is power a scalar or vector quantity?
A
It is a scalar as it only has magnitude and no direction
