1. The problem statement, all variables and given/known data The spring shown in the figure is compressed 50 cm and used to launch a 100 kg physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the 30 degrees incline is 0.15. Part a : Whats the students speed after leaving the spring? Part b : How far up the incline does the student go 2. Relevant equations V = square root ( k * x^2 / m) : 14.1 m/s (answer to part a) Conservation of energy 3. The attempt at a solution I was able to calculate part a and came to an answer of 14.1 m/s. For part b, i solved for the equation of : S = (1/2mV^2 + mgY) / mk*mg*cos(theta) = 155 m. That just seems to large of a distance to travel up an incline. Any ideas?