1. The problem statement, all variables and given/known data A 3-kg mass starts at rest and slides a distance d down a smooth 30o incline, where it contacts an unstressed spring. It slides an additional 0.2m as it is brought momentarily to rest by compressing the spring (k=400 N/m). Find the initial separation d between the mass and the spring. 2. Relevant equations Work=F*d Ek=1/2mv^2 Espring=1/2kx^2 v2^2-v1^2=2ad d=vt Fg=mg 3. The attempt at a solution I know that vf=0 and that v1=0 I really need help with v2 but im not too sure how to go at it. is this way of finding v correct even though the balls velocity is at an angle: 1/2mv^2=1/2kx^2 v= sqrt16/3 m/s can anybody please help?