When a bottle of liquid refreshment was opened recently, the following factoid was found inside the bottle cap:

The average velocity of a falling raindrop is 7 miles/hour. 

A quick search of the Internet found that meteorologist Jeff Haby offers the additional information that an €œaverage€spherical raindrop has a radius of 0.04 in. and an approximate volume of 0.000000155 ft³. Use this data and, if need be, dig up other data and make other reasonable assumptions to determine whether €œaverage velocity of . . . 7 mi/h€ is consistent with the models in Problems 35 and 36 in Exercises 3.1 and Problem 15in this exerciseset. Also see Problem 36 in Exercises 1.3.

Data from problem 35 and 36

mg ground ! level