1. The problem statement, all variables and given/known data A 34g bullet travelling at 120m/s embeds itself in a wooden block on a smooth surface. The block then slides toward a spring and collides with it. The block compresses the spring (k=99N/m) a maximum of 1.2 cm. Calculate the mass of the block of wood. 2. Relevant equations Not sure. m1v1 + m2v2 = (m1 + m2)v' Ee = .5kx2 Ek = .5mv2 3. The attempt at a solution I'm fairly certain it's incorrect. I just don't know where. Thanks!