What might cause a model limitation? (1 point) You know the approximate size of each planet. O You run out of materials to finish the model. O You have figured out the scale to use. O You have all the materials you need.

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.