September 2018 1 11 Report

Pocisk o masie m =0,1 kg uderzyl o deske z predkoscia v1=300m\s a po jego przebiciu poruszal sie z predkoscia v2=200m/s . oblicz jaka prace wykonaly sily oporu deski jaka byla srednia sila oporu gdy grubosc deski wynosila 2cm?


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