1. The problem statement, all variables and given/known data Two bullets have masses of 4.7 g and 11 g, respectively. Each is fired with a speed of 39.0 m/s. a) What is the kinetic energy of the first bullet? Answer in units of J. b) What is the kinetic energy of the second bullet? Answer in units of J. c) What is the ratio K2/K1 of their kinetic energies? 2. Relevant equations KE = 1/2 mv2 3. The attempt at a solution KE = 1/2 * 4.7g * (39.02 m/s) and so on... However, I do not know why the site is telling me my answers are wrong!