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The coefficient of kinetic friction for a 22kg bobsled on a track is .10. What force is required to push it down a 6.0 degree incilne and achieve a speed of 60km/h at the end of 75m?

So this is what I did:

I found the acceleration of the sled to be 1.85 m/s^2

Then I found the normal force= mg times cos 6= 214N

I then found the force of friction to be 21N

I then set Net Force equal to ma= 22 times 1.85 which equaled 40.7

Then I set 40.7 equal to forcex minus force of friction

and solved for forcex

Can anyone point out what I did wrong?

Thanks