1. The problem statement, all variables and given/known data A 7.0kg box moving at 6.0m/s on a horizontal, frictionless surface runs into a light spring of force constant 50N/cm . What is the maximum compression of the spring? 2. Relevant equations K=1/2mv^2 3. The attempt at a solution K=1/2(7.0)(6)^2 = 126N 126N/(50N/cm) = 2.52cm That is apparently incorrect.