Friction Flashcards
1
Q
What is friction?
A
Friction is the force that resists the movement of objects sliding or rolling over one another
2
Q
Why would you want to reduce friction?
A
reducing friction increasing the efficiency of the machine
3
Q
give an example to reduce friction
A
putting ball bearings between the wheel and axle to stop them from sliding over eachother
4
Q
when is friction good?
A
when we walk or run the grip between the shoes and ground. and when trying to break machines
5
Q
give an example of when friction is good
A
the friction between the brakes and wheels on bikes and cars slow them down.