3. An apple hanging from a tree has no initial kinetic energy (Ex, ) and a certain amount of initial gravitational potential energy (E,,). The stem of the apple breaks, and the apple falls to the ground. When the apple has fallen halfway to the ground, how does its final kinetic energy (Ex ( and final gravitational potential energy (E, () (at the halfway point) compare to E. ? a. Egi Er+ Exr d. Egi = Ert Bki e. Egi = Eki - Egr