Here is the problem: A student has two ramps both are at an angle of 30o. Ramp 1 is frictionless and ramp 2 has friction. The student also has two blocks, one for each ramp. She pushes the blocks up the ramps with the same initial velocity. The block on ramp 2 only travels a fraction f = 0.625 as far before coming to a stop as the block on ramp 1. Find the coefficient of sliding friction between the block and ramp 2. How do I even begin this problem? I have found the forces of each of the blocks. I know that it will involve more than one equation and the canceling out of variables to find the unknown needed. But how?