Forces Flashcards
1
Q
Force is
A
A push or pull
2
Q
Types of forces
A
Contact
No contact
3
Q
Contact ex
A
Friction
Air resistance
Elasticity
4
Q
Non contact ex
A
Magnet
Gravity
5
Q
Newton 3rd law
A
Every action has an equal and opposite reaction
6
Q
Unit of force
A
N
7
Q
Normal force
A
Opposite force equal
8
Q
Newton
A
One N is the force required to accelerate a 1kg mass by 1m/s
9
Q
Resultant force
A
Opposite force minus
10
Q
If something is moving from side to side the horizontal and veritical forces are
A
The same
11
Q
Rules for calculating resultant
A
Same direction: add together
Opposite : take away
Vertical and horizontal: cannot add= considered separately
12
Q
Stationary: zero resultant
A
Stay in place
13
Q
Stationary. Non zero
A
Start to move
14
Q
Moving. Zero
A
Move at constant speed
15
Q
Moving. Non zero
A
Accelerate / decelerate
