Calculate the velocity a spherical rain drop would achieve falling (taking downward as positive) from4.2km in the following situations. Randomized Variablesh=4.2km l=4.2mm d=1.22kg/m³

Part (a)Calculate the velocity in the absence of air drag in m/s.

Part (b)Calculate the velocity with air drag in m/s. Take the size across of the drop to be 4.2 mm, the density of air to be 1.22 kg/m³, the density of water to be 1000 kg/m³, the surface area to be r², and the drag coefficient to be 1.0.