Thanks for the replies, sorry about the acceleration and velocity confusion, I'm just really lost.
If there is no net force, then how would I find the force needed to keep the tractor on a 26 degree incline? I have only learned about Net Force and Newton's Three Laws so far.
A farm tractor tows a 4300-kg trailer up a 26 Degree incline at a steady speed of 3.0 m/s. What force does the tractor exert on the trailer? (Ignore Friction).
I've tried using 3.0 m/s as the acceleration, because I don't have enough information to derive the acceleration from the kinematics...