# If a #2 kg# object moving at #80 m/s# slows to a halt after moving #9 m#, what is the coefficient of kinetic friction of the surface that the object was moving over?

##### 1 Answer

Apr 19, 2017

#### Answer:

The coefficient of kinetic friction is

#### Explanation:

We apply the equation of motion to find the deceleration

The initial velocity is

The final velocity is

The distance is

The frictional force is

The coefficient of kinetic friction is