1. The problem statement, all variables and given/known data Okay there is 2 boxes. One mass has a spring attached to it. They undergo a collision. The spring then has a constant of 600N/m. M 1 = 1kg Vi1 = 4m/s Vf1 = 3m/s M 2 = 2.10kg Vi2 = 2.50m/s Determine Vf of M 2 and x value on impact. 2. Relevant equations 3. The attempt at a solution I am just wondering if my method is correct for solving these questions. First I would use the formula: m1vi1 + m2vi2 = m1vf1 + m2vf2 to find the final velocity of m2. Determining the X value is where I struggle. I know it's energy conservation but I'm not sure how to set it up. I did Ee = Ekf + Ekf I used my 2 final velocities in the equation due to the fact the question asked what was the X value impact. Is this the correct way to solve this problem??