Chris conducted an investigation to find whether the size of a rock affects the dimensions of the impact crater created. he found that the larger the rock that was dropped into the soft surface, the larger the formation created identify the following from the scenario
independent variable:
dependent variable: ​

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.