AP Physics Question on a Pendulum that I have not been able to solve, will give brainliest to the person that gets it right, when you answer can you please show me how you did it as well so I can learn?

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.