1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution a) I'm not sure how to calculate speed without having both distance and time but I believe it will revolve around calculating gravitational potential energy and kinetic energy. bi) I think this is just simply using the formula kinetic energy = 1⁄2 × mass × speed2. bii/biii) I'm really struggling to work out these. I think It might revolve around using the speed from the first question and then take it away from 22m/s.