When you view the pendulum’s swing, it shows that at the very top of the swing KE = 0. What does that tell you about the pendulum’s motion at that point? Sample Response: If KE = 0, the pendulum is not moving. At the top of the swing, the pendulum must stop for a brief moment.
What you need to include:
Zero kinetic energy means the pendulum is not moving.
The pendulum stops at the top of the swing.