QUICK calculation help - Why is my equation not giving right answer? Thanks

[nukeman]

Homework Statement

Ok, I am doing a problem where I am finding the acceleration of a mass sliding down a ramp.

I am now inputting the variables into Newtons 2nd law, and have the correct equation, but its not giving me the right answer. What am I doing wrong.

Here is the quation: finding acceleration.

(.2)(9.8ms^2)sin40 - (.1)(1.5N)


The answer is suppose to be 5.55 m/s^2

But I am getting 1.10986 ?

Homework Equations

The Attempt at a Solution

 

[iceblits]

divide by .2.
. Newtons second law states that f=ma. So ure equation is:(.2)(9.8ms^2)sin40 - (.1)(1.5N)=ma, so to find a, you have to divide by .2, which I assume is the mass.