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.
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:
v= sqrt16/3 m/s
can anybody please help?