Final answer:
In a pendulum, the potential energy is highest at the highest point and lowest at the lowest point. The kinetic energy is highest at the lowest point and lowest at the highest point.
Step-by-step explanation:
In a pendulum, when it reaches its highest point, it has maximum potential energy and zero kinetic energy. As it swings downward, the potential energy decreases and the kinetic energy increases. At the lowest point, the potential energy is at its minimum and the kinetic energy is at its maximum. The pendulum then swings back upward, converting the kinetic energy back into potential energy.