1. The problem statement, all variables and given/known data http://imgur.com/VwoDF58 2. Relevant equations How would I calculate the velocity the box gets off the ramp? I believe I need to use Vf = Vo + 2 a x a is gravity so it is -9.8, correct? but what do i put in as x? 5, which is the length of the ramp, or 4, the base, or 3 the height?