conservation of energy 9
Conservation of EnergyThe Dropper Popper and the Woodpecker Toy
Please watch the video-clips below and explain both experiments in terms of conservation of energy.
https://www.youtube.com/watch?v=D3Vn36YmNik
Note that the device (half of a rubber ball) seemingly defies the Law of Conservation of Energy by bouncing higher than where it was dropped from.
https://www.youtube.com/watch?v=s3YSnNAIHDg