A 10-kg package is raised vertically from rest by an elevator at a constant acceleration of 2.5 m/s2.
A) Determine the kinetic energy of the package at 13 s after the elevator began raising the package.
B) Determine the change in the gravitational potential energy that the package undergoes in the 13 s.
C) Determine the amount of work that the gravitational force does on the package during the 13 s.
D) Determine the amount of work that the elevator does on the package during the 13 s.