help with force of friction

[ballahboy]

masses m1=4.00kg and m2=9.00kg are connected by a light string tht passes over a frictionless pully. m1 is held at rest on the floor and m2 rests on a fixed incline of 40.0degrees. the masses are released from rest, and m2 slides 1.00m down the incline in 4.00seconds. determine the acceleration of each mass, the tension in the string and the coefficient of kinetic friction between m2 and the incline

i really dont get this problem.. can u guys show the work too
thanks.. i really appreciate it

[cepheid]

What specific problem do you have in tackling it? Did you draw the free body diagrams? Start there...be methodical. Show us some work so we can see what you have attempted