# If a #5 kg# object moving at #15 m/s# slows to a halt after moving #12 m#, what is the coefficient of kinetic friction of the surface that the object was moving over?

##### 1 Answer

Jul 18, 2017

#### Answer:

#### Explanation:

We know that the work done by friction is equal to the change in kinetic energy of the object.

where

so

and