P1.1.3 - Drag Forces and Friction Flashcards
1
Q
Rough surfaces have ______ friction.
A
more
2
Q
When is friction a bad thing?
A
Friction that wears down a bike chain.
Carpet burns
3
Q
What is friction?
A
A force that acts when two force against each other.
Friction causes grip.
4
Q
Smooth surfaces have _______ friciton.
A
less
5
Q
How can you reduce friction between 2 surfaces?
A
Use lubrication e.g. oil
6
Q
When is friction a good thing?
A
Friction between your shoe and road to allow you to walk.
Friction between bike/car brakes and the wheels to allow you to stop.
