Final answer:
In the event of a fall, it is true that employers must have a rescue procedure in place to ensure the safety and quick recovery of employees to prevent further injury or worse.
Step-by-step explanation:
The statement, "In the event of a fall, employers must have a rescue procedure in place," is true. Employers are required to ensure the safety of their employees by preparing for various emergencies, including falls. This preparation includes having effective rescue procedures to quickly and safely retrieve a fallen worker to prevent further injury or fatality. Failure to do so would not only be a violation of workplace safety regulations but could also lead to serious consequences for both the employee and the employer.
Addressing the additional examples provided, for the situation where an apple falls from a tree, the interactions between kinetic and potential energy as well as the forces involved in scenarios like a tug-of-war or a rock being thrown would be determined by the principles of physics. The laws of motion and energy conservation are key in understanding these events.