HI! This problem has been killing me... The Q is the following: A canon fires a canon ball which weighs 50 grams vertically at an initial speed of 600 m/s. 3 Km on top of the point where it was fired, the speed is only 50 m/s. calculate the heat during the canon ball rise. I dont know how to use the kinetic formula in function with the energy formula, any help would be appreciated!