According to the Law of Conservation of Energy, energy cannot be created or destroyed, only transferred from one form to another. In this scenario, if the wrecking ball has a potential energy of 149.5 kJ when raised to a certain height, that energy will be converted into kinetic energy as it falls.
When the wrecking ball makes contact with the wall, assuming there is no friction or other losses, all of that potential energy will be transferred to the wall. Therefore, the energy transferred to the wall upon contact is:
149.5 kJ.
So the correct answer is 149.5 KJ.