What is the direction of the moving force of air?

a.) from warm temperatures to cold temperatures

b.) from areas of high pressure to areas of low pressure

c.) from high elevations to low elevations

d.) from east to west

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.