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roovid
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rate of change of momentum. Newton 2nd law (solved)
hailstones with an average mass of 4grams fall vertically and strike a flat roof at 12ms-1 .
In a period of 5 minutes, 6 000 hailstones fall on each square meter of roof and rebound vertically at 3ms-1 .
Calculate the force on the roof if it has an area of 30m2 .
the ans is 36 N
please help
hailstones with an average mass of 4grams fall vertically and strike a flat roof at 12ms-1 .
In a period of 5 minutes, 6 000 hailstones fall on each square meter of roof and rebound vertically at 3ms-1 .
Calculate the force on the roof if it has an area of 30m2 .
the ans is 36 N
please help
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