What is the downward pull on an object due to gravity?

mass

weight

acceleration

velocity

Name the non metal condut electricity

Give an example in which the electrical energy changes to light energy

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.