Collision problem UPDATED I messed up the first post. My cut/paste function malfunctioned. There should be sufficient information now. Sorry for the confusion. Two 500 g blocks of wood are 2.0 m apart on a frictionless table. A 10 g bullet is fired at the blocks. It passes all the way through the first block, then embeds itself in the second block. The speed of the first block immediately afterward is 6.0 m/s. What is the speed of the second block after the bullet stops? I tried to set this up as an inelastic collision problem, but the bullet passing throught he first block is throwing me off. I initiall set Pi=Pf but came up with a negative velocity way out of proportion for the bulet when exiting the first block. Where should I start with this problem?