Предмет: Физика, автор: юбт

с балкона высотой 20 м упал на землю мяч массой 0.2 кг из-за сопротивления воздуха скорость мяча у земли оказалась на 20 % меньше скорости тела свободно падающего с высоты 20 м . импульс мяча в момент падения равен

Ответы

Автор ответа: borz26

V=(1-0,2)*корень квадратный из(2gS)=0,8*корень квадратный из(2*10*20)=32[мс]
р=mV=0,2*32=6,4[кг*мс]

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