Question

what is friction force
in the attachment​

Answer 1

Explanation:

Friction is a force between two surfaces that are sliding or trying to slide accross each other

Answer 2

Answer:

$i \: hope \: it \: is \: correct$

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move.