1. The problem statement, all variables and given/known data A 2kg sinker is thrown with a vertical velocity of 10m/s from a bridge into a river 12m below. What is the kinetic energy of the sinker when it hits the river?? Answer is 3.4*10^2 J 2. Relevant equations KE = 1/2mv^2 3. The attempt at a solution tried substituting directly into KE = 1/2mv^2 but obviously not write ant help would be appreciated.