# If a #2 kg# object moving at #1 m/s# slows to a halt after moving #1/4 m#, what is the coefficient of kinetic friction of the surface that the object was moving over?

##### 1 Answer

Apr 12, 2016

#### Explanation:

To find out the retardation due to kinetic friction let us use the equation

where

or

Now Force

or Retarding force which is the force

We know that ths

Assuming that the surface is a level surface,

Taking