Friction Flashcards
1
Q
In what way is friction not useful for the cyclist?
A
Wears out the chain and gears
2
Q
Which of these is deliberately changed in an investigation?
A
Independent variable
3
Q
True or false? The faster you move through a fluid (liquid or gas), the less drag you experience.
A
FalseAs you move faster, you collide with more particles of the fluid.
4
Q
How can the damage due to friction in car engines be reduced?
A
Using motor oil as lubrication to reduce friction
5
Q
What is the purpose of streamlining?
A
To reduce the effects of air resistance
