Friction Flashcards
1
Q
define friction
A
a force that resists motion
2
Q
cause of friction
A
contact between materials (molecules touch)
3
Q
symbol of friction
A
F to the power of f
4
Q
what is friction measured in
A
newtons (N)
5
Q
name 3 types of friction
A
air, liquid, rolling
6
Q
how can you increase friction
A
change material, change weight, change amount
7
Q
if a bowling ball is moving forward what is the direction of friction
A
backwards
8
Q
how can you decrease friction
A
make the surface smother, change material.
