If you haven"t been on a Ferris Wheel yet, you"ve probably seen one. Close your eyes, picture yourself 90m off the ground, level with the main axel of the Singapore Flyer, the world"s largest Ferris Wheel (in 2011) and imagine how your vertical height changes as you start going higher and higher, in an anti-clockwise direction, around the wheel. Draw the graph of how your vertical height changes as time passes. Now,...