If your front lawn is 25.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1150 new snow flakes every minute, how much snow (in kilograms) accumulates on your lawn per hour, assuming an average snow flake has a mass of 1.80 mg?

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Answer 1 · 2018-04-03T18:40:12

19.17 kg

calculate area of lawn

#25 * 20 = 500# sq ft

calculate how many flakes fall per minute

#500 * 1150 = 575,000# flakes/minute

convert per minute rate to per hour rate

#575,000 * 60 = 34,500,000# flakes/hour

now you know how many flakes feel in that one hour so we can now weigh them

#(34,500,000) / 1.8 = 19,166,667# mg (rounded)

convert to kilograms

#(19,166,667) / (100,000) = 19.17# kg (rounded)