1. The problem statement, all variables and given/known data A 0.0900 kg glider is pushed up a 40.0° frictionless incline by a spring. The spring's constant is k = 640 N/m with negligible mass. The glider reaches a distance of 1.80 m along the inclined track after losing contact with the spring and then slides back down. What distance is the spring originally compressed? 2. Relevant equations 0.5kX2^2 - 0.5kX1^2 = 0.5mV2^2 - 0.5mV1^2 3. The attempt at a solution I have absolutely no idea how we can possibly know the distance of the spring's comression. There does not seem to be enough information here.