# A force of 65N is required to keep a 16kg block sliding across a horizontal surface at a constant speed of 5m/s. What is the coefficient of kinetic friction on the surface?

## and a force of 65N is required to keep a 16kg block accelerating at 1.2m/${s}^{2}$ across a horizontal surface. What is the coefficient of kinetic friction on the surface? show your work

The coefficient of kinetic friction ${f}_{\text{k}} = 65$.

#### Explanation:

The motion of a block is on horizontal surface.
So in this case, if the block slides or moves with uniform velocity, the applied force $F = {f}_{\text{k}}$.
As per question it is said the block is sliding at constant speed of 5m/s.
$\therefore {f}_{\text{k}} = 65$