Forces Flashcards
1
Q
What is a scalar quantity?
A
Scalar has magnitude (size) only
2
Q
What is a vector quantity?
A
Vector quantity has magnitude and direction
3
Q
What do arrows represent when talking about vector quantities
A
- length if the arrow shows magnitude
- the arrow points in the direction that the vector quantity is acting
4
Q
Name some scalar quantities
A
- mass
- distance
- speed
- energy
- time
- power
5
Q
Name some vecotr quantities
A
- displacement
- acceleration
- velocity
- forces
6
Q
What is a force?
A
A force is a vector quantity. It occurs when objects interact
7
Q
What is a contact force?
A
Where the objects are actually touching
8
Q
What is a non-contact force?
A
When the objects are not touching
9
Q
Name some contact forces
A
- friction
- air resistance/ drag
- tension
- normal contact force
- upthrust
10
Q
Name some non-contact forces
A
- gravitational force
- electrostatic force
- magnetic force
11
Q
What is weight measured in?
A
Newtons (N)
12
Q
What is mass measured in?
A
Kilograms (Kg)
13
Q
What is gravitational field strength measured in?
A
Newtons per Kilogram (N/Kg)
