This program simulates a puppet on a swing. The arrow shows the velocity of the puppet (longer arrow means higher speed). The bar graphs show the puppet's kinetic energy (KE), potential energy (PE) and total mechanical energy (E). You can change the starting position of the puppet (within reason).

Questions

As the simulation runs, watch the bar graphs. When is the kinetic energy (green) bar the maximum? When is the potential energy (orange) maximum? How does the total energy change? Does its height change? Explain.
Move the puppet to a different start position. What changes? Why?
When is the puppet moving the fastest? Is it when the KE is the biggest? Does it make sense for kinetic energy to be associated with 'energy of motion'?
When is the puppet moving the slowest? Is is when KE is the biggest? PE the biggest? Why is PE sometimes called 'stored energy'?
During one swing (once you have picked a starting point), what quantity is conserved (does not change): a) KE, b) PE, c) E?