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officialrogerfp3gf2s
16.12.2021 •
Physics
13. A sofa has mass 32kg and the coefficient of kinetic friction between the crate and floor is 0.57 What force must you push on a sofa to accelerate it at 1.8m/s/s across a rough floor?
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Ответ:
pe = weightxheight = 2000x1000=2,000,000joules