1. The problem statement, all variables and given/known data A block is given a initial speed of 5.0 m/s up the 20° plane. (a) How far up the plane will it go? (b) how much much time elapses before it returns to its starting point? 2. Relevant equations I think V= u + at s=ut t 1/2at^2 v=d/t 3. The attempt at a solution (a) V= u + at 0= 5-9.8(sin20)t t = 1.65s s=ut+1/2at^2 =5(sin20)(1.65)+ 1/2(9.8)(1.65^2) s= 16.16m (b) v=d/t t=d/v =16.16/5 t= 3.2s I know this is wrong but i can't figure it out can someone help me?