1. The problem statement, all variables and given/known data An ice cube at the melting temperature that has a mass of 20 g, is struck by a bullet with a mass of 9 g, flying at a certain speed. Determine the speed of the bullet, if it is known that one third of his energy was consumed to break the ice, and the remainder to melt it. Latent ice melting heat λt= 335 kJ / kg. 2. Relevant equations q=1/2mv^2 3. The attempt at a solution 335 kJ/kg means 335 J/g Heat = 335 J/g * 20 g = 6700 J This was 2/3 of the starting kinetic energy of the bullet, the 1/3 is spent on chunks flying everywhere. 6700 J = 0.5(0.009 kg)(v^2) * 2/3 v = 1494 m/s The problem is that the answer is supossed to be aproximately 1060 m/s but i can't get it. I feel like i'm missing something but don't know what. Any help will be appreciated.