Mechanics - Scalars and Vectors Flashcards
1
Q
What is a scalar?
A
an amount of something, it has no direction
2
Q
What is a vector
A
something with a magnitude and direction
3
Q
Examples of vectors?
A
- displacement
- velocity
- acceleration
- momentum
- force
4
Q
Examples of scalars?
A
- time
- speed
- distance
- length
- temperature
- energy
- mass
5
Q
Can we add vectors?
A
yes,this method is used to find a resultant
6
Q
What are the methods of adding vectors?
A
- tip to tail diagram
- use pythagoras if the lines create a triangle with an angle of 90
- if not draw a scaled diagram
