A spherical raindrop 2.1 mm in diameter falls through a vertical distance of 3650 m. Take the cross-sectional area of a raindrop = r, drag coefficient = 0.45, density of water to be 1000 kg/m, and density of air to be 1.2 kg/m. (a) Calculate the speed a spherical raindrop would achieve falling from 3650 m in the absence of air drag. 267.39 m/s (b) What would its speed be at the end of 3650 m when there is air drag? (Note that the raindrop will reach terminal velocity after falling about 30 m.) 15.2 What is the net force acting on the raindrop in the presence of air drag? What is the acceleration when the raindrop reaches terminal speed? m/s