Friction Flashcards
(8 cards)
1
Q
What is friction?
A
A force that resists movement between two touching surfaces.
2
Q
When does friction happen?
A
When an object slides or tries to slide over another surface.
3
Q
Where does friction act?
A
Between solid surfaces that are in contact.
4
Q
In which direction does friction act?
A
Opposite to the direction of motion or the force trying to move the object.
5
Q
Why does friction occur?
A
Because surfaces are rough, and their tiny bumps catch on each other.
6
Q
What must happen for an object to start sliding?
A
The pushing or pulling force must be greater than the friction force.
7
Q
Is friction always bad?
A
No – it can be useful (like helping shoes grip the ground).
8
Q
Can friction create heat?
A
Yes – rubbing surfaces together transfers energy and causes warming.
