Question

potential energy is stored energy, while kinetic energy is energy of motion.
in the diagram below, when the swing is stopped at point a it has the most potential energy. as the swing moves, the potential energy changes to kinetic energy through point b and it has the greatest amount of kinetic energy at point c.
when it is in motion, at what point does this swing have the least amount of kinetic energy?
point c
point a
point b

Explanation:

Step1: Recall kinetic energy formula

Kinetic energy $K = \frac{1}{2}mv^{2}$, where $m$ is mass and $v$ is velocity.

Step2: Analyze velocity at each point

At Point A, the swing is stopped, so $v = 0$. When $v = 0$, $K=0$. At Point B and C, the swing is in - motion and has non - zero velocity.

Answer:

B. Point A