Physics Post 8

For this physics post I will be explaining the picture I took of me shaking a pen. You could say that I am shaking this pen fast. But relative to what? I could be shaking the pen fast relative to a gorilla shaking a banana tree. You could also say that I am shaking this pen slow. But again, relative to what? I could be shaking the pen slow relative to a bomb shaking the molecules in the air. This can all be considered true because everything in the world is relative to something else. You could say a sloth was really fast. Relative to the speed of the growth of the tree it's climbing on. You could also say the speed of sound is slow. Relative to the speed of light.