1. The problem statement, all variables and given/known data A child is pulling a 10kg sled along a horizontal plane of ice with a force of 50N directed 60 degrees north of east. Find the force of friction between the ice and the sled, given that the sled is moving at a constant velocity. 2. Relevant equations Fnet = ma Fnet = Fx - Fk muK = Fk/Fn 3. The attempt at a solution Here's kind of a crappy drawing of what I was able to get out of this... I just dont know where to go from here. I have Fx, 25N, and I believe Fn is 55N, but to find Fk i need to find Fnet, which is where I get stuck. And I don't know how knowing that the object is moving at a constant velocity can help me when I don't actually know it's magnitude. Any help is appreciated!