1. The problem statement, all variables and given/known data Ok I cant seem to figure this out. Maybe im tired, or strung out on coffee :), but I need some help! The image shows the question with diagram: 2. Relevant equations 3. The attempt at a solution Iv done this a few different ways, but all WRONG. The CORRECT answer is V = 0.767 m/s First I found the speed of the ball by going mgh (.300)(9.8)(.500) which gave me 1.47 m/s Then I found the speed as it left the block after hitting it by the same method. Which would be 0.588 m/s So then I simply used: m1v1i + m2v2i = m1v1f + m2v2f (.300)(1.47) + (.200)(0) = (.300)(.588) + (.200)(x) and solve for x gave me: 1.32 m/s WHAT am I doing WRONG? Very appreciate any help on this one guys. Thanks!