Задача №27.21

Условие

Корабль массы 107 кг движется со скоростью 16 м/с. Сопротивление воды пропорционально квадрату скорости корабля и равно 3*105 Н при скорости 1 м/с. Какое расстояние пройдет корабль, прежде чем скорость его станет равной 4 м/с? За какое время корабль пройдет это расстояние?

Решение




Предыдущая задача №20
Какова должна быть постоянная тяга винта T при горизонтальном полете самолета, чтобы, пролетев s метров, самолет увеличил свою скорость с v0 м/с до v1 м/с. Тяга винта направлена по скорости полета. Сила лобового сопротивления, направленная в сторону, противоположную скорости, пропорциональна квадрату скорости и равна α Н при скорости в 1 м/с. Масса самолета M кг.
Следующая задача №22
Тело падает в воздухе без начальной скорости. Сопротивление воздуха R=k2pv2, где v — величина скорости тела, p — вес тела. Какова будет скорость тела по истечении времени t после начала движения? Каково предельное значение скорости?
Источник: Решебник Мещерского 12 класс
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1.1
1.2
1.3
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2.1
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3.1
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9.1
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10.1
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19.1
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24.1
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27.1
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28.1
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31.1
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32.1
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33.1
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34.1
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37.1
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38.1
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39.1
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41.1
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42.1
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43.1
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44.1
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45.3
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46.1
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47.1
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48.1
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49.1
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53.5
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54.1
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55.2
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56.3
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