E=mv^2/2
E=0.3*1/2=0.15 Дж
n=mgh/FL
n=25*10*0.1/40*2=0.3125
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Задача 1
E=mv^2/2
E=0.3*1/2=0.15 Дж
Задача 2
n=mgh/FL
n=25*10*0.1/40*2=0.3125