Forces Flashcards
1
Q
Different types of forces
A
- reaction force (upwards)/upthrust
- electrostatic force (charges)
- thrust
- lift (aeroplane wing)
- tension (rope or cable)
2
Q
Friction
A
A force that opposes motion
- static friction
- friction between sliding surfaces
- air resistance
3
Q
Friction in a fluid/gas
A
Always increases as the speed increases
4
Q
Investigate motion
A
- light gates and a data logger
- repeat and average
- mark a line on the ramp (starts from same point)
5
Q
Terminal velocity
A
Constant velocity that a freely falling object eventually reaches
6
Q
Resultant force
A
An overall unbalanced force
7
Q
Balanced forces (no resultant force)
A
Constant velocity/stationary
8
Q
Unbalanced force (resultant force)
A
Object will accelerate in the direction of the unbalanced force
9
Q
Third law
A
Every action has an equal and opposite reaction
10
Q
Scalar
A
Quantities that only have size
11
Q
Vector
A
Quantities that have size and direction
