Inclined plane w/ friction problem

[peachy112girl]

Homework Statement

A 5-kg block is sliding down an inclined plane. The angle between the incline and the horizontal is 23 degrees. The coefficient of kinetic friction is 0.20. What is the acceleration of the block, in m/s²?

Homework Equations

The Attempt at a Solution

Here's the answer that I got, but I'm not sure if it's correct:

ma = mgsin23 - 0.20mgcos23
a= gsin23 - .20gcos23 = 2.02 m/s²

 

[maladroit]

this looks good to me!