Quote:
Originally Posted by Eratosthenes
...and yet a single rain drop at rest can potentially unleash about 9,000,000,000,000 Joules in energy
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Really care to do a back of an envelope calculation for the distance travelled (ignoring atmospheric resistance) in order for a typical rain drop (volume 0.05ml) to release 9x10^12 Joules.
Then try calculating the energy incorporating atmospheric resistance where the resultant force on the rain drop is no longer conservative.
This latter calculation will give a much more realistic value.
I leave it to you as an exercise.