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Calculate the speed (in m/s) a spherical rain drop would achieve falling from 4.10 km in...

Calculate the speed (in m/s) a spherical rain drop would achieve falling from 4.10 km in the absence of air drag and with air drag. Take the size across of the drop to be 5 mm, the density to be 1.00 ? 103 kg/m3, and the surface area to be ?r2. (Assume the density of air is 1.21 kg/m3.)

(a)in the absence of air drag.

(b) with air drag.

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