1. The problem statement, all variables and given/known data A bullet of mass 0.125 kg traveling horizontally at a speed of 250 m/s embeds itself in a block of mass 3.5 kg that is sitting at rest on a nearly frictionless surface. (a) What is the speed of the block after the bullet embeds itself in the block? v = ? m/s (b) Calculate the kinetic energy of the bullet plus the block before the collision: Ki = ? J (c) Calculate the kinetic energy of the bullet plus the block after the collision: Kf = ? J d) Was this collision elastic or inelastic? inelastic (e) Calculate the rise in thermal energy of the bullet plus block as a result of the collision: Ethermal,bullet + Ethermal,block = ? J (f) Which of the following statements are true? The bullet and block got hot because Q was large. Because the process was very fast, Q was negligible. Q was negative during the collision because the bullet and block were hotter than the surroundings. 2. Relevant equations delta p1+delta p2=0 delta K=0 3. The attempt at a solution For a.) i tried 2(m/M)v but it was wrong.