1. The problem statement, all variables and given/known data The problem includes some pictures, so I will post the link here: http://faculty.polytechnic.org/cfle...pdfs _Jan_2010/zq-Mult Choice Test 3 csb.pdf It is question number 20 2. Relevant equations Ug=mgh KE=(1/2)mv^2 3. The attempt at a solution Since the inclines are frictionless, the time depends on the mass, velocity, and distance travel. However, the mass is not given, so I don't know how to approach the problem. Can somebody please help me out with this?