What is the acceleration of the upper block connected by a string?

[kdb004]

Homework Statement

Two blocks are connected by a string as pictured in this link below
http://session.masteringphysics.com/problemAsset/1176902/2/ch05.P070.jpg

What is the upper block's acceleration if the coefficient of kinetic friction between the block and the table is 0.11?
I am unsure of where to start or an equation to even use. help on how to solve it would be greatly appreciated

 

[PhanthomJay]

Draw a free body diagram of each block, and identify the forces acting on each. Then use Newton's laws for each block. Note that the acceleration of both blocks must have the same magnitude, since they move together. Also note that the tension in a cord wrapped around an ideal pulley is the same on both sides of the pulley.