1. The problem statement, all variables and given/known data A 10g bullet moving at 300.m/s hits and passes through a 2.20kg pendulum target. After the impact, the 1.20m long pendulum rises up to an angle of 15 degree, find the final speed of the bullet. 2. Relevant equations Ek= 1/2MV^2 Ep= MGH Momentum = MV 3. The attempt at a solution I assumed all energy before and after the question will be = because the collision is inelastic, both masses dont stay together. I found the height the pendulum rises by doing 1.2-(1.2Cos15). Then I put everything i knew in EK= Ep + EK (300^2)*(0.01)*(0.5) = (2.20)(9.8)(0.04) + (0.5)(0.01)(v')^2 When I solve for velocity I get the answer wrong. What am I doing wrong, am I wrong that energy is conserved ?