Coefficient of kinetic friction of a block

[landry]

Mk

Homework Statement

The coefficient of kinetic friction of a block depends on:
A. normal force.
B. surface area of the 2 materials
c. mass of block
d. speed of block
e. what the 2 materials are made of

Homework Equations

The Attempt at a Solution

SInce friction of a block depends on what the 2 materials are made of then i believe the answer would be E since Mk is a type of friction

 

[dynamicsolo]

The coefficient of kinetic friction of a block depends on:
A. normal force.
B. surface area of the 2 materials
c. mass of block
d. speed of block
e. what the 2 materials are made of


SInce friction of a block depends on what the 2 materials are made of then i believe the answer would be E since Mk is a type of friction

Among the choices available, I'd agree that (e) is correct.