1. The problem statement, all variables and given/known data I need to come up with a general formula that a vehicle with given mass(m), friction coefficient(u), acceleration force(f), and slope(theta), return the amount of acceleration on the vehicle. 2. Relevant equations max acceleration on an incline = -mgsin(theta) + (umgcos(theta))/m 3. The attempt at a solution Following the information here, https://www.physicsforums.com/showthread.php?t=235128 I believe the equation for the maximum acceleration up an incline, = -mgsin(theta) + (umgcos(theta))/m, but this is just the maximum possible given the friction. I need to scale this down depending on the how much force the vehicle can put out. Any suggestions on the next step, or am I going about this the wrong way?