Calculate the velocity a spherical raindrop would achieve falling (taking downward as positive) from 5.8 km in the following situations.
h = 5.8 km, l = 3.6 mm, d = 1.22 kg/m^3
1. Calculate the velocity in the absence of air drag in m/s.
2. Calculate the velocity with air drag in m/s. Take the size across of the drop to be 3.6 mm, the density of air to be 1.22 kg/m^3, the density of water to be 1000 kg/m^3, the surface area to be Ļr^2, and the drag coefficient to be 1.0.