4.3 Scalar & Vector Quantities Flashcards
1
Q
What are scalar quantities?
A
Scalar quantities are just numbers - they simply tell you the ‘size’ (or ‘magnitude’) of the thing you’re measuring, and nothing more.
2
Q
What are vector quantities?
A
Vector quantities tell you both the size of the thing AND its direction
3
Q
How are arrows used to represent vectors?
A
The length of the arrow represents the magnitude and the way its pointing represents the direction
4
Q
What are four different terms that can be used to describe an object’s motion?
A
- Distance
- Displacement
- Speed
- Velocity
5
Q
What are three examples of scalar quantities?
A
- Temperature
- Speed
- Distance
6
Q
What is velocity?
A
Velocity is speed of the object in a given direction
7
Q
Is power a vector or a scalar quantity? Explain your answer.
A
Power is a scalar quantity because it only has a magnitude, it doesn’t have a direction
