A. What is the terminal velocity of a 5mm diameter rain drop? You can assume that the rain drop is spherical and has the same drag coefficient as a smooth rigid sphere. As a first guess, assume the drag coefficient for the drop is 1. Calculate the rain drop's terminal velocity using this drag coefficient. B. Was that a good first guess? Why or why not? You might find Fig 7.16b (next page) helpful. What is the approximate speed and drag coefficient of the rain drop