1. The problem statement, all variables and given/known data A wet bar of soap (m=150g) slides down a 2m long ramp at 7.3° relative to the horizontal. How long does it take to reach the bottom? 2. Relevant equations d = 1/2at2 3. The attempt at a solution The answer is apparently 1.81 seconds, although I can't figure out how. I can figure out the height of the ramp to be 0.25m, but using the equation above tells me that it should only take 0.22 seconds if you use gravity as the acceleration. What am I doing wrong?