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# The average mass of rain drops is $\;3.0 \times 10^{-5}\;$ kg and their average terminal velocity is 9 m/s . Calculate the energy transferred by rain to each square metre of the surface at a place which receives 100 cm of rain in a year .

$(a)\;3.5 \times 10^{5}\;J \qquad(b)\;4.05 \times 10^{4}\;J\qquad(c)\;3.0 \times 10^{5}\;J\qquad(d)\;9.0 \times 10^{4}\;J$