1. The problem statement, all variables and given/known data 2. Relevant equations R = 1/2 gt^2 R+x = vt 3. The attempt at a solution For a), I tried to find t first, which is equal to √(2R/g). Then, I put t = √(2R/g) into the equation R+x = vt, and I found out that v = (R+x)/√(2R/g), is that correct? For b), is the answer (R+x)?