Question

Suppose that you want to model the height of a rider on a Ferris wheel as a function of time. The amplitude of the function you use as a model should be equal to which of the following?

A) the area of the Ferris wheel
B) the circumference of the Ferris wheel
C) the diameter of the Ferris wheel
D) the radius of the Ferris wheel

Answer 1

the answer is in the picture below :)

Answer 2

D
The maximum vertical displacement of the rider from the center will be when he is at the top or bottom of the Ferris wheel. The distance from the center to the top (or bottom) of the Ferris is its radius.